I have been trying to find a way to use timed explosives in combat, for player killing and for exp. It seems impossible. I really like the idea of timed explosives and I'd like a way to use them in combat somehow... They are one of the most fun weapons to use in the game! The the down side is, they are highly situational and hard to use in PVP or PVE combat.
Maybe if they were throwable like grenades, you could set the timer for 3-5 seconds and throw them. Then you could use them for EXP as well as hunting players. They are heavier then grenades, so would have atleast 5 Str requirement for throwing, and range would not be too great, the same or little less then grenades, but far enough to keep the thrower safe from the blast.