For whatever reason I bought an Execution a while back. At first I tried the Overhating build. But I was going through an Omni phase at the time and came up with this. It's no meta build, but I have stuck with it anyways... Maybe it rocks and I just don't know how to pilot it...?
10xcUPL version: you lose a lower arm actuator and TC1 (only +5% speed and very small crit bonus, no range bonus to ERPPC and very negligible range bonus to lasers), but keep the same amount of DHS. You could also arm mount the ERPPCs for better pinpoint on brawling lights and better side pokes... I'm not sure it is gonna be worth it, though.
The thing about the EXE-A arms is that they prevent lateral arm movement, so putting the ERPPCs in the arms doesn't make much difference. I'd run 10 micro pulse lasers with 2 large pulse lasers instead of ERPPCs. There isn't a position I'd put the Executioner in where the range of the ERPPCs is maximized. It's too tall and can't trade well with other long range builds. Also if you want an Omni build with only D hardpoints, I'd recommend 2 large pulse and 6 small pulse.
The Executioner should make for a decent assault poptarter given the fixed jump jets and high nipple cannons. Although maybe assault poptarters just aren't that practical to begin with. Thanks for sharing your thoughts.