Is there a way to integrate Bugzilla easily into Sugar and ensure the relationships are maintained between accounts?

The main issues I have with the SUgar BugTracker are:

1) No parent child relationships between defects within the Sugar bug tracker
2) Notifications are only sent to the assigned resource and not the manager
3) No way to assign defaults by product
4) No way to remove the mass update feature by role
5) No reports with graphs for BugTracker
6) Can't make existing fields required
7) No way to limit other drop downs based on other selections i.e. Product X Version A,B,C if you select Product Y Version 1,2,3

Thanks for your help...