Improve end game phase

I always knew that even on all vs all there was a time on the game where you could win and lose in one second difference.
But playing these three game:

http://www.creeptd.com/en/games/56cxpzw ... o8ehcu44uk ( this one not much )
http://www.creeptd.com/en/games/mh7vovo ... kwxhf7t6r8
http://www.creeptd.com/en/games/pn8vm2b ... m0zr7460ys

Now made me realise this needs to be reworked. Why?

- Always same tactic save for raptors or send a mothership first to dont let kill all raptors then send phoenix´s.

- Most of the times you get the win because you started to send the wave first.

- Mothership should be the ultimate badass creep that everyone should fear but rarely its used because raptors are better in cost/efficiency.

How to improve the end game phase:

- More towers/creeps/power ups/interact with the opponent field more possibilities for new and better tactics. The most competetive games always have alot of options to do thousands of tactics. Think it like a chess game compared to a checkers game. And now you see why chess is a sport and checkers is not.

- Nerf raptors. This will make people sending motherships more often and thinking of better tactics then save to send a raptor wave.

- Regularly change tournament maps. When people already mastered that map they will play neck to neck till the end and will result like the three games above.