I remember playing Tribes 2 and several mods, Meltdown2, War2003, RevMod, Shifter... I think even UltraVX was a mod for Tribes 2.

I can't figure out where to get the native linux version of Tribes 2, and running T2 under Wine produces really strange results.

T2 under Wine works good for me (although I haven't played in a while). I'm not sure if the Lokigames version has the same level of mod support or can be patched to support community online matchmaking.

I gave TA and a few other RTS games a try.
I will not be able to add these games as they lack dedicated server options. 😢