High speed glass cannons were always a fun build archetype to play around with in these games. I had tended to go the other way as a kid though, building hulking behemoths loaded to the teeth with bullets and bombs. Just don't ask me to walk anywhere in any kind of efficient manner! Next mission waypoint a hundred steps that way? Meet you in an hour.
Omega polygons in the og, lol. Man, I'm so hyped for FoR. I've always loved mechs from gundam as a wee lad, but unfortunately never tried out the old AC games. So awesome From decided to go back to this; I've enjoyed Souls quite a bit and was blown away by Bloodborne, but even though I obsessively Played Elden Ring, I'm pretty fatigued on the Souls/borne/sekiro format it became and glad they are releasing something different even though it's going back to an older series. With the exception of remakes, I don't think I've played anything "new" since ER.
Well, understand that it doesn't really play like a Souls game at all. That said, I'd probably just wait for the new one if you're excited for it. If not, either AC4 or AC5 would probably be the way to go. The early games didn't map camera movement to the right stick; so, I would avoid those as a newcomer.
AC4 plays a lot more "super robot-y" than the other games. AC5 has much smaller mechs by scale which makes terrain and cover much more important tactical considerations.