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As a dragon enthusiast myself and play Disaster Dragon for as long as i've been able i see what your trying to do with the deck, a sheer beatdown mixing elements from fusion and synchro together to provide a more consistent engine. However i will go through each area of your deck in hope to constructively help you in the ways i can.
Monsters:
3 blue eyes- i see your trying to find room for the potential 4500 beater that dragons mirror can provide, however even with darkness metal and totem at your disposal to summon them i still find the choice of tech a bit slow in such a fast format, i would drop all three essentially to make room for something that can address a situation instantly.
2 delta flyer- that's fine easy synchro material and fodder for darkness metal if need be and potential xyz material.
3 drago- excellent to run 3 in format, too good not too actually.
1 LADD- way to slow in format, even with the totem build. you will find it as a way to stall for a few but decks now a days have way to many outs to LaDD. i would drop for something more live.
3 masked dragons- i personally run 2 since their alright but not essential at 3, but if you like them for fodder for darkness then feel free.
1 prime material- i personally side deck him for the potential chain burn match up and if they rely on destruction eff. but you can main him doesnt take too much room.
3 REDMD- nuff said
2 wyvern- i prefer them at 2 due to chance of clogged hands and only being an 1800 attacker so good call.
2 totem- i dont like them anymore personally since LaDD is so slow now, you can keep them in for darkness metal fodder due to them being removed anyway but its not a must.
SPELLS:
dark hole
heavy
reborn
2 mst
future fusion- all above are staple including future fusion
dragons ravine- drop it i tested it in too see if it could run as well in the build, and i see your reason to tech, toss a dead blue eyes, but i just doesnt do enough for this build sadly.
2 dragons mirror- with the need for dragon decks to keep a strong grave presence this defeats the purpose. i understand that the extra beater is fun to have but alas doesnt fix that the fusion is so easy to get rid of, if dragons had a better fusion that didnt only serve as a beater and future fusion target then i would say keep it but sadly no need for these.
Gold Sarc- back in the day used to grab trunade and future fusion for a power play, however at one this card is useless and way to slow, if you choose to run it then run in 2's i would drop altogether and choose a different engine to run on, i suggest duality personally.
TRAPS:
2 black horns- eh their not bad act as a solemn in their own rights. so if you like you can keep.
2 bottomless- thats fine
3 bribe- nuuuuuu never main 3 ever due to the likelihood of being dead and adding the plus to your opponent. if you like them then main 1 or side 1 but never 3 maybe tech a starlight road.
mirror force- thats fine.
RFTDD- not a bad card in other decks, but as dragons no matter what we dont have power plays, this card is overall decent but unless used as an OTK just no room for it, and in todays game we will never get the chance we want to use this right.
Magical Refpanel- a funny tech choice personally, throws the opponent off for sure you can keep that no prob, side it if room becomes problem.
SIDE DECK:
not going through all them. A side deck is meant to act as answers to your opponents deck choice. and only 3 cards in this side are anti meta in least to slow opponent. i would bump t-king up to 3 and veiler up to 2, i would add some cards like kycoo, d.d. crow, burst breath, burial from a different dimension, debunk, pulling the rug, fossil dyna, king tiger wanghu, dust tornado, d-prison, exploder dragon. you can pick and choose others as well but any of those in 2's or 3's will be fine addition and help hinder opponents moves, i personally main 3 t-king bc they dont hurt our deck in the least.
EXTRA:
scrap dragon needed
but other then that ok, i would get rid of ultimat dragon, thunder end, and trident. they arent easy and pretty much worthless in todays game style.

overall: good deck needs some tweeks to be more consistant but i like the options, hope this helps bud

Thanks, Arca, I couldn't have placed it in better words myself. Only I'm never too keen on Seven Tools of the Bandit.

Monsters: 19
cryomancer 1x
Dance Princess 2x
Defender 3x (fox one)
Destiny Hero Diamond Dude 2x
General Gantala 2x
General Raiho 2x
Prior 3x
Samurai 1x
Strategist 3x

Spells:18
Heavy Storm
Magical triangle of the IB 1x
Medallion of the IB 3x
Miracle fusion 2x
monster reborn
moray of greed 1x
my body as a shield 1x
MST 2x
Salvage 2x
Soul exchange 1x
Surface 3x

Traps: 3
Royal Decree 3x

Side Deck
Your preference im still working on this deck but this is the beta of it

Extra Deck:
Absolute Zero 2x
Staples 13x

Again this is just a prototype i built you can tweak it as you want its a little sketchy but with absolute zero being so good it helps it along. good luck tell me how it runs. any questions on why something is in there feel free to ask.

staples are stardust, black rose, scrap dragon.
basically intended to mean most synchros or xyz that can be used in any other decks. oh and gungnir is a must as well forgot him though

do with it as you please i havent done much with it. i just personally like the art of each pic. but deck isnt bad though

i just built it when i saw you were looking for an ice barrier deck so i expect some roughness but again do with it as you please :p i dont like giving people exact list that is a copy paste and win :p that takes the creativity away so make it your own ^^

Also, can someone make a deck list of wind-ups. They look pretty interesting.