Any map unfriendly to rants is a good map, to be honest.
Now i don't want to turn this into a rant rant (huehuehue) but rants are fucking overpowered, i don't care about their supposed weaknesses like not being able to jump because in 90% of the maps we actively play on this server their weaknesses don't get exposed at all. The main problem with tyrant is that there is no reason not to use it in most maps, we aren't AA server but still we basically 24/7 atcs, and on atcs there is no reason not to use rant unless humans made a miraculous move to bunker top. If you don't force people to use other classes they won't use other classes. The only thing goon has an edge over vs rant is agility and speed, i actually find this trade off worth it (so do a lot of good players) but for newer players this is their reasoning:
Tyrant compared to Dragoon:
Rant: 2x goon's hp
More damage (i believe it can even oneshot crouched helmets)
Costs 2 evos more (but noobs only dretch until they can evolve into rant, so it doesnt matter for them)
Especially the 2x hp is a big pull factor for newbies
Goon: Faster movement (although disorientating for noobs)
Smaller hitbox (noobs only charge enemies head on anyways, so who cares)
(possible snipes, but noobs will only miss these anyways)
So yeah, if we don't force noobs to use other things than rants by having maps that expose rant's weaknesses, they won't start using other classes themselves, thus they stay noob.
Moral of the Story: Play more arachnid and Karith, #TuckFyrants.