A solid white glow isn’t quite easy to notice at a quick glance, and many players open fire on them which leaves them at an unfortunate disadvantage.
I’d suggest having the respawn material overlayed on the player instead be an upward scrolling glowing coloured/white stripe. This way players can at a quick glance realise a player still has respawn protection because of the glowing animation overlaying their playermodel, rather than a solid glow that could be mistaken for just a part of their model.