A Client is more a Reseller now, he can set only his limits and no way for dynamic.
Situation: Client with: 500MB Traffic 100MB Webspace Websites max:5
User add 2 Sites he has to split traffic/webspace an quota. But user has 2 projects, traffic is always under 500MB maybe by 450MB. He has to set infront limits for split:
Web1: 80MB Webspace 400MB Traffic
Web2 (Development): 20MB Webspace 100MB Traffic
If Web2 need more (because he is very Active) he has to set the traffic new. No way to set -1 or dynamic or maybe 450 MB Traffic and 450MB traffic. And if the client limit is full its the end...