The Pingers are waaaay too easy. Imo on Supersolider difficulty they should throw out that Ping alot more often. As it stands it's too easy to just cloak, run behind them and fill their ass crack with C4.
I would think that's pretty patchable.
I would also have suggested bringing back normal sprint, but then I remembered Alcatraz is pretty much dead, and wouldn't be sprinting anywhere without suit energy.
..Still, that doesn't mean we shouldn't get it in MP.