Currently, the hull repair bonus granted by the leadership trait and the Borg set (2 pieces) is uneffected by combat status and crew. I'm not sure if this is intended or a bug. To discuss this issue, I've created the following thread:
You operate with pretty small numbers there. My experimental cruiser build was at 500%, my steamrunner sits at 360%. Now in those ranges, the hull regen starts to be interesting I guess leadership will be nerfed soon. It took them 3 years to fix it, only to nerf it in 3 weeks.
If anything, the subsystem repair part is somewhat OP in PvP, because it cuts VM duration to 1-2s.