How can we improve WHMCS?

There are times when an account with multiple accounts wouldn't want the Users he or she has added to access tickets opened for each service.

A typical example would be where an account Owner managing 10 accounts for 10 different companies want to be able to give "View & Open Support Tickets" permission to a web designer to a specific hosted domain.

Presently, there is no way to do this in WHMCS and it would be great if it is considered.

Thanks.