You can also use the regular LR hotbars KBM people use to act as timers for actions that are on hotbars that aren’t visible at the current time

For example I used to keep the actions on my healers I’d press more than once per 30 seconds or so on my main hotbar then my extended hotbars (double tap L or R) would have my more rarely used actions (like say temperance or dissipation), you can then put their icons on LR hotbars and put them off to the side so you can track the timer even if the cross hotbar they are on isn’t visible

Also double tapping L or R on cross hotbar 1 and 3 can be set to both times pop up cross hotbar 2, on my tanks I used to put single target actions on hotbar 1, AOE on 3 and since both popped up hotbar 2 when double tapping L or R I would put my mitigation on 2

The cross hotbar system is actually incredible if you know how to use it, it’s not remotely a limitation (controllers only real limitation is excessive soft targeting like on AST), you just have to know how to use it