Welcome!
I added on the first page which mods are to be preferred. I also underestimated the importance of that CD triangle on the attackers, especially Lando.
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How to mod your arena team:
Stormtrooper Han
You want your STH to go first with his special "draw fire". This fills the other players turn meter (up to 30%).
Also when he gets damaged, the others get (up to 20%) turnmeter. Although he is a tank, you need to give him a speed primary arrow mod (receiver). Protection on circle (databus) and cross (multiplexer) but with a speed secondary. The triangle (holo-matrix) can also be protection primary with a speed secondary.
Boba Fett
Boba can ability block the other players, even STH. He should also be very fast. At level 78, omega the "death from above" ability, so if you are faster than the enemy's STH, you can block him. So he also gets a speed primary arrow. He can use a potency cross, so his ability block will come through against the other team's tenactiy. Boba will be revived with ) a percentage of his health (up to 100%, so give him some health secondaries. The triangle can be crit dmg primary. Boba Zett (zeta boba) also can use high protection.
Lando Calrissian
Lando needs high crit chance over all, and a crit dmg primary triangle. If you can farm cc (crit chance) mod sets, that would be great. Protection primary on the cross and circle. Speed or Protection primary on the arrow are both possible.
Biggs Darklighter
Biggs needs to be very fast. He also gets a huge speed up by Wedge's unique, so that you can maybe oneshot a squishy (especially in lower leves) with the "Wiggs" attack. He also needs a speed primary arrow. Protection primary on circle and cross. Speed secondaries are even more important, but also cc secondaries are very good here.
Wedge Antilles
Wedge is often the target no. 1 for your enemy. I prefer mine to be well protected. As long as Biggs can call him with his assist (omega gives Biggs -1 cooldown), he has his greatest value. So give him cc mod sets, a cd (crit dmg) triangle and protection on circle, cross, and maybe even arrow (others say also speed, but I like protection more).
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