It's been awhile since a game has managed to gain momentum in the the strategy genre on Kongregate, at least since kingdom rush. I congratulate you on the attention. Personally i think the writing could be better in some places, but other then that you've done good.
Looks like a black sheep in a normally good series of games. While there is far more character diversity then the previous 2 the lack of both a story and characters personalities really damages the game. I don't think customizable squads was something people expected or wanted. It also looks like you got rid of skirmish mode which I enjoyed using to grind in previous games. This game feels a lot different from the previous ones. The most important part of a series is consistency. A lack of something from a previous game will cause complaints provided the reason you got rid of it wasn't that they were complaining in the previous game.
in all fairness giving it a 2 would be harsh in my book but in others it's probably pretty generous. This game is filled with poor design choices and bugs. The gun drones need to be nerfed, the giant wall of metal needs to take damage from things other then snipers. Cannon turrets need to do more damage for their terrible accuracy. The damage buff should be buffing the machine gun turret and it's not. I think you guys get the point