Some people like scat

Let's not

hay sens beta is on hold lets play this
Play me in Balloono: http://omgpop.com/i/balloono/l75ng_2fgej

here is something to add
for ever kill you get EXP
you can use EXP to level up abilities such as running
or save them up in order to change you rank
for example : grunts can become solders or builders and then level up abilities like max block or less recall

also power ups like health packs and ammo packs should be spreed randomly across the map

if u r a builder it wont mater to much

That is not as good as scroll.

you would have to move your hand to the keyboard and in a situation that's just no good.

well i think instead of using all the arrows to change the color of the block,
left & right to
up & down for type

another thing i think should be in the game is from falling blocks
so people will think twice before distorting a tower as soon as its done