Some AAs and Discs don't have wear off messages so It's impossible to have a timer bar that stays up reminding you for a minute or so telling you to recast something when it wears off beyond just having a timer that starts when you cast it and giving you some text when the timer ends.
This could be kind of faked by my request which would be triggering a recast timer for those skills that don't have wear off text when a timer set up for the buff ends instead of a little message or sound popping up for a few seconds which can be missed if a lot is going on in a raid etc. Luckily most buffs seem to have text when they land on you so they can still be used to restart the main timer and end the recast timer.