Using the base of Kath + EH + RC; I ran this list in a game today vs the rebel swarm of 3 blues and 2 prototype A's.
Kath EH + RC
2 x Academy Ties
I won the game with room to breath. Mauler was a beast crushing an A wing in the first pass and stripping a B for Kath to finish off.
I really liked Backstabber and Mauler in this list because of the increase in firepower they bring to the table over the other TIE pilots. Also, like stated before in this thread, it made the target priority of the ties more pronounced; helping Kath to be alive in the endgame.
Thanks to this thread I feel like I now have a Firespray list that fits my playstyle.