My janky low point self wants to tell you to run this list LOL. It's probably bad.... but to be honest, I dont see much killing thyron when he has the guardian and lyss supporting him. I feel like AFG will do more than enough for damage and forcing him to use jump start if you choose to knock down a jack. Helios can just keep pushing jacks away OR pulling them in. I think Repulser Field also becomes a much bigger issue in a low point game against a heavy battle group list. Extra models that can stand behind to prevent a warjack from being pushed away are severely limited. Aside from that, I think thyron jsut starts shredding up some khador jacks =D w/ stormrager. Def 17 w/ riposte means they have to be cautious to try and take out your support first (which will conveniently be hiding behind helios or afg) or else they will start to kill themselves and losing systems. Obviously dont let him face tank all the heavies at once but I think he can hold his ground as long as you're controlling the pacing w/ AFG/Helios. AFG just spreading out some rough terrain could also be a huge issue for him bc he has no means of giving out pathfinder!
It's jank but it could be pretty effective against karchev! LOL also AFG is just hanging back so they will NEVER get to it. You are guaranteed basically 2 boosted pow 16 shots into a jack every round. That's pretty nice... =D