Some good ideas. I'd expect blade dancer and locks to become the new issue if striker is nerfed. The rush play style works good vs bolt grenades as they become hard to place. And FoH counters arc blade storm trance and radiance well. I'd say the trip mine nerf was more responsible for the increased striker use than throwing knife. Trip mines were near identical to brute spike grenades from halo. The nerf meant that one of the most used pvp classes no longer had a sticky grenade. Sticky grenades forced a kill trade or stopped shoulder charge a good deal of the time, which made shoulder charge less worth it. Flux grenades also don't do enough damage as certain max armor builds can survive them. But overall I would say shoulder charge needs a rebalance (buff + nerf). Combining ideas from how halo implements the ability, and how over watch used it on the reinhardt character. So in short easier to use no time limit to use it after you start sprinting, but not a guaranteed kill. Give it a nice target push so you could get the kill off a target wall impact and possibly add a short duration stun or disorientate. The other route is to make this a line area attack that basically acts as bowling ball hitting all targets in the way with knock back and disorientate but no OHK. But yeah nerfs alone usually create more problems especially when they don't look to correct the power shift preemptively.