>>23599883
You want close combat in tight quarters? There's options specialized for that.
Take out guerillas? There's a better way of doing that than a heavy brick of a suit. You shoot them from the sky and kill whoever survives. Again, got a good option for that.
You do make a point about showing off its issues though, it's just rather hard to slot that in for Cluster where by that point it must have been years since it was tested and verified as a dead end. Even if the gang is in a situation where that's the only thing they have, F90 is better off without it. I could see some combo using its backpack though, nothing wrong with that part in principle.
Crossbone is also a very specific case because it's built around different paradigms and even with tougher armor it has stupidly high thrust.
>>23599887
Why are you acting so confident when you know fucking nothing?
F90's single defining feature is how freakishly light it is combined with performance that can take advantage of that. Modularity for the mission packs is a way of making further use of that and its nature as a test machine. This is repeated over and over again in multiple sources including FF and Cluster.
Fantastic mobility is exactly why it beat Draig and why it did it bare instead of using one of the packs available at the time. It's also what the Mars F90 focuses on: ditch the extensive hardpoint system, refine the core capability as an excellent all-rounder high mobility model and make it better suited to frontline combat. Then Mars Gundam manages to combine these, but that's besides the point.