I played Anarchy Online extensively and it had plenty of odd classes, however the fixer was rarely seen as an additional healer even less so the higher you went up, perhaps it changed again now but who knows. For the rest most of the classes just game you a small extra buff as all buffs were spread out, what was a good and bad thing, equiping items could end up making you run around asking for 10 buffs (yes in Anarchy Online if you got a new piece of gear you had to make sure you could equip it and remain in 75% of the stats to use it at full power) So that could involve some serious spreadsheet work and maths to plan ahead but that was part of the games charm. For the rest to get back to the point only bureaucrats charms really played a support role beyond healing, I have a 220 engineer somewhat over half in AI levels but beyond my teleports and special blockers (what was mostly pvp only) i never had a role beyond dealing damage. So i think you're looking at it a bit too much back at it with nostalgia cause beyond the odd situation you didn't really have support in your team. In this game each class has two roles and those roles can be mixed match cause it's not like "you swap to tank tree/dps tree" it doesn't work like that.