It would have been cool if they change up Limit Break more, in the past Bards used to have heal lb for example and were able to rezz the whole group. In other FF games you are able to choose what Limit Break you want to use, in FFXIV the content enforces one kinda LB for optimal play. You could add aoe ones for melees and single target ones for physical ranges, add TimeStop for Mages so you can choose which one you use in which content.

Small scale PvP could also profit from cooler animations than the tier 1 LB animations. Could be just faster LB3 animations, so it is easier to tell what is happening, because you really don't see aegis boon animation from tank lb1 every time.

and if you see people in normal content struggling just tell them to type /ac "Limit Break" , probably faster than to search the button on the x-th tab in the command menu