Alright.
---Exile Vs Nomi:---
Nomi is a powerful force user and a decent duelist, however, The Exile - at least in her wound stage, was a force to be reckoned with, having defeated Darth Sion a number of times, Darth Nihilius and Darth Traya as well.
Given that the exile's abilities are much more defensive(Force resistance, enlightenment and Bm) I think she is well suited to solidly defeat Nomi, in the sabers category as well as the force category, albeit with more difficulty.
Exile wins against Nomi imo.
-----
---Mace Vs Revan---
Mace has fought with greats like General Grevious, Bulq, Depa Billaba, Ventress, Darth Maul and of course, Darth Sidious. While Revan has taken on powerful foes, like Darth Malak, Lord Vitiate and the imperial Strike team.
Mace's ability were great developed in TK and his Shatterpoint ability gives him a good edge, but Revan is far more powerful in terms of the force, force lightning, force barrier, TK, etc. Revan has a greater variety of powers at his disposal that could get the best of Mace, that said, Mace did defend against the force lightning of Darth Sidious and should no doubt have an easier time deflecting Revan's force lightning. Force Edge goes to Revan. While, Mace without a doubt gets the Lightsaber edge as his skills and prowess with the saber vastly outstrip Revan's own.
I'm going to go with Mace in a good fight.
-----------
Honestly, it's all a question of "can the exile defeat Nomi fast enough to help Revan?" which I think she can beat Nomi fast enough, though not necessarily speedblitz her. With that said, The exile as a wound would prove to be a dangerous foe, as simply by observing Mace, she could learn Vaapad and give team Revanchist a great edge. So, I'm going with team Revanchist in a good fight.