I don't have much experience with PvP, but I wouldn't consider all beam loadout to be that good even for PvE. It takes a while to bring down the hull with lasers for my taste, I'd at least throw a few multi-cannons in there. Beams are also not very good at targeting modules. If you must go all beams, then thermal shock is indeed something you might want to consider. I would think an effective build would involve a mix of different experimentals rather than the same one on everything.