As some of you already know, in the upcoming July 8th patch, buffs will show their remaining duration when you hover your mouse over them in your buff window. This is indeed great news!
Of course, this eliminates one of the uses for my timer, but it is one feature that I've always hoped they would add to the game client so I'm very glad they are finally putting it in.
My timer UI mod is still useful for timing other things such as detrimental spells cast on mobs, buffs you cast on others but not yourself, recast/reuse time, spawns, etc.
So, for those of you who are configuring timers, please keep in mind that after the July 8th patch, you will no longer need timers for buffs on yourself (unless you want a constant visual indication of when they are about to wear off without having to hover over the buff). For myself personally, this frees up a timer slot for me, allowing me to add an additional mez bar in its place for an alternate duration mez.