Thunder Wave needs to be somewhere on the first set. ITs useful for beating dragon dances like mega gyara, dnite, zard x, etc that you can't OHKO. You'll paralyze them, then get another hit on them, sometimes even some parahax. A far more favorable outcome to just getting one attack in. Even against TTar its more favourable as it will outspeed you at +1, and if you miss that focus blast you're boned. T-wave is just nice as a parting gift if your sash has been used up and the opponent checks you with something you cant break and is slower.
Secondly, Encore should get a spot in moves on mega attacker. It lets you beat sucker punch users 1 on 1 if you predict correctly, its handy to stop defensive boosters like CM clef, and it really messes with stuff trying to recover on you, such as Chansey.
Finally, mega zam totally outclasses LO zam due to power/speed, can we deslash life orb on the main set? Sash Zam is a revenge killer not an attacker like Life Orb.