BOBJ key concerns

Gurus,how to address the main concerns below from BOBJ

Memory leakage

BOXI3 product stability

Date are treated as Characters in BO

Cache problem query is running from server all the time for every refresh

Need to restart very often if any problem occurs

SAP BI BOBJ Integration Kit improvements (current kit has OLAP u2013 BAPI which is not fast)

Role synchronization for EP users unavailability

Thanks in advance