I'm currently a f2p player that has been playing just under a year now. Even though I won't be getting Malak anytime soon, I know plenty of people who have met the 17.5k power requirements, and yet left disappointed due to the sheer difficulty of the Malak event. I know that the optimal team comp for the LS is JKR, Bastila, and Jolee (which are more or less essential) and Mission and Big Z (which can be replaced). I have heard of people doing it with T3 instead of Mission, however I know this makes the LS much more difficult. I have JKR Relic Level 2, Bastila and Jolee G11, and currently T3M4, Mission, and Big Z are pretty much sitting on Gear 6. This gives me a load of freedom in terms of who to gear up, so the question is, who should I gear up out of mission and t3m4 in a way that will give me the most benefit in the future? I currently have GG at relic level 2, so a zT3M4 would be very useful in ramping up his damage for a GG nuke team. On the other hand, mission could be nice on an old republic team, but I'm not sure how viable this team would be in grand arena.
TLDR: I want to minimise the amount of gear and zetas I invest in getting Malak, and need to decide between gearing up t3m4 and mission. I also want to choose a character that I can actually use in the future outside of this epic confrontation event. Any advice from players more experienced than I would be great.