The system is designed so that it would work with existing Notes based HR systems simply by adding one view to the existing database. That said, I do intend to supply a better HR database out of the box.
I also intend to look at complementary databases within openNTF and making eTimesheets compatible with them. For example, if you have an openNTF Leave Tracking system and you have leave approved, the system could automatically add a leave booking to your timesheet for the appropriate day.
Finally, the timesheet system was originally designed to work with a back-end ERP system that I wrote. I do intend to provide more ERP type functionality. For example, the system could import HR data from SAP or Oracle eBusiness Suite and it could export approved timesheet bookings into the Projects Ledger where the time would be costed.