I would like to see some game types change.
Instead of having 2 bases to cap, where half team wants to cap and half defend and there's no coherent team play. Why not a dedicated attacking team and a dedicated defense team objective, then switch?
Or instead of 3 cap points, 3 flags that you must return to your base? After losing 1 flag I can't imagine any team camping. Maybe only 1 flag in the centre available to capture until a team scores, then the flag respawns?
I liked the idea of gaining advantages for being within range of the cap in the latest variant but it isn't enticing enough people forward still. Many are happy camping picking off those that try to move forward. If anything it encourages defensive play more over an attacking game.