Crafting bombs would be so much cooler if you could use a progia to rig a command detonated bomb. This could be really badass or really hilarious if someone dials the wrong number.
The obvious strength here is that you can be as far away from the area as you want to be, but that is also the strength of the other bombs.
You can also detonate it on command which is not the strength of the other bombs, but if you have nobody or no equipment spotting for you then it is down to guess work.
You also shouldn't be allowed to rig these types of bombs to a tripwire because that makes them pointless.