I tend to like a clean graphical style, so I was a fan. No promises as to how most people would feel. I would had a better shot if you gave me more units, but I also probably could have thought my gameplan through more. I thought the phalanxes acted better as support units (since they just deal more damage per turn), but the skeletons are probably a better unit all-around.
I can't say what I would do in your place. I haven't really been making anything with an eye towards monetization, so I'm probably not the best person to ask on that front. I do think with a bit more polish (unit descriptions in-game, maybe some terrain to work around) it would be something that would get the interest of people who like strategy games.