I might be a bit of a party pooper, but most of the characters have names
that would work well, or American toys with names that would work well.
I would look at some of the characters who got upgrades, where the names
don't quite work for the US.
Dirge and Dirgegun are awesome.
Megastorm and Gigastorm, also great.
Starscream and Hellscream, while great, might not fit Hasbro's standards.
(Starscream and Seascream?)
BB and Max B are not terrible
Thrust and Thrustol needs work. A lot of work. I might go Ramjet and
Rampage.
Apache should just be B'Boom.
Bump can be Armordillo.
The Seacons can get their G1 names.
BW Neo has more characters where the name might need an update though. But
it's also less likely we would ever see it here as the toys aren't great.
--
I wish I was a mole in the ground.