...or defuse/reset them whenever a player who is using the Tazer comes along (but it has to be selected as your active weapon or it won't work).
Or it could mark the mines within a certain radius with a glow just like Flags/AuG/Key in certain game modes.
Green for proxies, blue for timed and red for remotes.
While not neccessary for timed or even remotes (hey, your own fault if you use it when there are no proxies), it could make proxies a lot less annoyn.