-I had several ideas come to mind, such as a new siege engine be released, like the trebuchet, we get a Warwolf styled trebuchet to where this could one shot multiple people if they're close together, more people together, it increases in damage. It'd cost alot of AP, and bind on pickup. As for keeps, maybe double the damage that stone trebs do. Reload time for this would also be doubled however.
-Another one is where ZOS brings back DK's ability to jump off a wall and quickly use the chains to pull someone with them. Before, this was possible and I'd use it to try to pull one of their group off of the inner forts walls. You can still sorta do this with the "Magnum Arrow" skill, I dunno about the templars Javelin skill? I know it knocks down players but think they removed the option to knock them back too to which they should bring that back..
-Make "Absorbtion Field / Suppression Field" negate a cheaper cost. It naturally costs 192 (with passives) to which takes awhile to build up just to use against ball groups.
-This next idea, may be a bit crazy, but make immovability not a thing in PVP locations, except the natural immovability that occurs after you break free. This could actually make cyro a bit more challenging and fun, It'd actually make pure tanks probably struggle even more.