I have to admit when I'm wrong. The bomb strategy you described was something I did not even consider, and I also completely miss-played the game! I think that's a first I have made such an error. Completely missed the orthogonal movement freedom, I was just so used to the limitations of match-3-games that I did not even think you could move more then one step at a time (Strange, as I did play it for quite a while.)
So with that said, I can differently see now the strategic death that it creates, and the bombs make perfect sense now. Was way more fun, great work!