Pros:

Lots of Tanks, limited supplies, a proper challenge: you will need to find the right tactics but it's definitely beatable - even on Expert

Cons:

None that I can see

Conclusion:

Tanks Playground was a fantastic map and this is another. Obez is the master of Tank maps. Try it, you won't regret! :-D 

Pros:

Tanks!
Great map - takes a while to get to know
Exciting gameplay
Great fun with a mate and a couple of stupid bots
Not being certain where the chopper will land is cool
It's definitely do-able on expert (with just a little luck here and there)

Cons:

Bile and Pipe-bombs a waste of time; please make all throwables Mollys (thanks)
No respawning (One respawn per character in the TV room would be nice)
Would like to see a few more exploding barrels here and there
A version with zombies/hordes would be great to try (maybe then we could put the bile and pipes to some actual use)
How about adding some random firework boxes and fuel cans? (Fire is definitely our friend on this map)

Conclusion:

Fantastic. Love it. Major props to you :) Make more!!