I think you've made a number of mistakes regarding character A here, correct?
20 - 9 = 11, not 12.
Likewise, its every 11th round, not 12th (numbers in parenthesis would thus work)
Heh, yes, While reading over the post I changed the numbers but mistakenly missed some, lol.
I have to advise you to make good use of terrain. You may not realize it yet, but a strong part of tactics and keeping the game fresh will come from terrain being different.
I couldn't agree more and believe me, I want to do fun things with terrain, its just a matter of time (ie I don't have enough of it). Terrain effects (along with unit facings affecting combat) is near the top of the list for "phase two" of development. I'm in step one of the iterative design process... I intend to release something playable in some fashion without those aspects of combat and evaluate where I'm at at that point. From there its a matter of prioritizing what additions will make the most difference in "fun factor" to the game as a whole. Thus, I'm trying not to extend massive amounts of thought energy on the topic. Hopefully that makes sense.