Never tried End Dragoon before but what about this:
-2 Lonefire (it's just a deck thinner here and it searches dandy, that's all it does other than being a Debris target, lets find a replacement)
-1 Dandy (meh xD)
-2 Malicious (is he supposed to stall?)
+2 Snowman Eater (debris target plus it gives access to Gungnir, and well, it's effect is cool ofc)
+3 Diamond Dude (speeds up, eludes costs)
-3 Dealings (-1 advantage each time u use it is not cool...plus ur hand gets raped when u fuse dragoon already)
-2 Fusion Recovery (shituational, could be dead really often. I know it's godly when u already called out Dragoon but I personally don't like it xD your choice)
+1 E - Emergency Call
+1 Destiny Draw
+1 ROTA (search Stratos and you'll have one of your materials already)
+2 Miracle Fusion (Dhero/stratos/prisma + king/snowman=Azero or you can always go for shining with prismas and stratos, decent back up plan)
+1 Allure of Darkness
You can consider 2 Duality as well taking out allure and destiny draw...if u hit it with Diamond Dude you will be able to Special Summon during the next turn when it's effect is activated.
Scapegoat could come in handy to summon an instant dogma/plasma and opens some other debris plays.
Nothing much to say other than that, never liked Dragoon decks xD.
