There are many buttons that you not need in rotation/combat to waste limited space of hotbars (and cross-hotbar as I see on scrennshots have even less space), like Teleport, Return, Mount, Use food, Change Job, Emotes. Right now common solution is use tonn of macros and 7,8,9,10 hotbars on jobs to juggle with hotbars but it's just clunky.
For example how radial-menu looks in WoW (OPie addon)
For FF14 there is addon of TPie but I would prefer to have oficialy supported feature and not setup 3rd party