Why: so I can selfkill/respawn for tactical purposes (ammo, health, class switching, falling back etc.) at the exact right moment. Something on the hud should warn me when a pending respawn timer is closing in. Enough time so I can react and switch class and selfkill (by keyboard.) Or just a normal timer, so I can plan ahead.
And a word about timers: I love how the ETQW timer is “forgiving” (and find it overall feeling right,) giving you a split second timeframe (after the respawn has been initiated and the timer has been reset) to respawn again (but only by that split second at the start of the timer,) a mechanic that enables you to make it slightly late. And by the same token, I dispise the ET timer for being strict and not including a zero.
Or at least all the features in a new one.