Totally agree with new enhancement. There were lot of confusion in webadmin resource quota management.
If a webadmin have 2 plans including disk quota
Plan A = 50 MB
Plan B = 1 GB
If a website associated with plan A use all disk space, then HC automatic generate email with website stop warning due to over Usage. Funny thing is webadmin have much space left in Plan B which he can't merge/use in Plan A.
My vote is YES