Just having them explode at the end of the turn on which they were applied would be a big bonus... some battles are so short they never get to explode.
Have devs ever actually played the Jawa Omega missions? You will never get a detonator to explode in one of those missions unless you get such hopelessly bad RNG that ever other physical and special attack misses. It's such a shame because they're so fun to use! They're rendered useless in PVP as they can be cleansed (whoever thought of cleansing a detonator).