-2 Helios the Primordial Sun
+1 Breaker the Magical Warrior
+1 Exiled Force
Well your "challenge" didn't say that you have to use 3 copies of it... Helios is a pathetic card where a Sangan will almost always run over it. Keep one copy for thematic sake, and to work with Macro Cosmos I guess...
-3 D. D. Scout Plane (or 2, if you need one to keep the theme)
+2 Reinforcement of the Army
+1 Cyber Dragon/Exiled Force
Gren Maju De Eiza got heavy conflict with this thing... D. D. Survivor already does the same thing in this case anyway, and D. D. Survivor is searchable to hand at least. I'll still keep one Cyber Dragon in the deck for the "waiting for RFG cards" period of this deck. Even when the RFG card is in place, it's still semi-decent to tribute summon it (as essentially, tributes are free of cost here.) On the other hand, there's also Exiled Force to destroy monarchs when your RFG pile isn't big enough yet, but then Exiled Force isn't as good here as other decks cause you can't Rat it out, and you can't reuse it by reviving it too... Still, it's an option.
-2 Return from the Different Dimension (or -1, if you want to keep the theme)
+1 Ceasefire
+1 Ring of Destruction (from sidedeck)
D. D. Survivor doesn't stay in the different dimension anyway. At least 6 cards in this deck needs cards in the different dimension to even have an attack power above 0. Why use this to reset your almighty attack power? Really, you are only getting the Radiances and the Kycoos as the only targets of RftDD... I'll pass. Try Ceasefire cause your Survivors will always be there, to boost Ceasefire damage. And now, we got room to get ring back into the maindeck to take mobius down along with your back field.
-2 Grand Convergence
+1 Nobleman of Crossout
+1 Enemy Controller
I don't see why Nobleman of Crossout isn't included, as it's also a RFG card too. Grand Convergence is so risky in three, cause it's useless when your two copies of Macro Cosmo are not available. Enemy Controller is again highly abusable when essentially D. D. Survivor makes it free.
Actually 3 Helios WAS a requirement...as was the Helios Duo, Macro Cosmos, & Grand Convergence...but everything else was me. My fault for not saying it. Sorry.
...The Scout Planes were one of the first things to come to mind, since they work from the Graveyard too which Survivor doesn't do... but, yeah, I'll drop them.
RftDD is there for my heavy hitters for an OTK, and since it only fills up my 5 monster card zones (Kycoo, Banisher, DDWL, De Eiza, & Helios(/Cyber Dragon if sided in) + only SEVEN rfg cards = GG), any other monsters, spells, & traps remain RFG for the powerup (and it combos nicely with Grand Convergence)...but with 3 Dimension Distortion I guess it's kinda dumb to have two...I'll add in Nobleman.
*DECK UPDATED*