When you play command and conquer games, they always give you a limit on how many command points you have, well i'm going to do a voting thing on how many points there should be maximum, i'll update daily.

1. 100-300

2. 400 -500

3.  500- 700

4. 600-900 

5. 900 and above 

P.S.: why don't you also say how you can extend that limmit. building more engineers, sarges, etc.