This is an old thread from January that gave us several new Takara trademarks, namely:
So, let's follow them one by one.Seven Changer
"ECSHIGAZAR"
Sonic Bomber
Back Guild
Fast Gunner
Rumble
"RAM"/Rumble Convoy
"Seven Changer"? No idea (yet).
As for the rest: We recently got this listing.
"Ecshigazar" (possibly "Exkaiser") is GC-19.
Sonic Bomber is GC-22.
Back Guild is GC-20.
Fast Gunner (or "First Gunner") is GC-21.
Rumble (or "Ramble") is GD-13.
Now, the interesting part:
We know that Liger Jack is an upgraded Jackshot.
We also know that Liger Jack can combine with Galaxy Convoy.
Back Guild could be a Backpack upgrade.
First/Fast Gunner could be a First Aid upgrade.
It's also suspected that GD-15 Arm Bullet might be an upgrade of Land Bullet. And the name "(Arm") suggests he might combine with Master Megatron.
Now, something that has been originally pointed out by X-BoB58 of TFans:
"RAM"/Rumble Convoy - either that's "Arm Convoy" ("Arm" as in "Arm Bullet"), or Rumble can also combine with someone.
Maybe Flame Convoy? Or the rumored "Megalo Convoy"? Which would probably make him a Destron too.