Could shield durations of 1h be added.

It would be useful to have shields end shortly after an event like OvO or KvK/r ends.

Currently all shield durations are additive, they add to, not end at. (Naturally.)

The only current way to effect this is to drop shield, then raise correspondingly.

Preferred would be to only add what's needed - dropping shield is often harmful to one's health. Multiple h increments would be possible.

15m or less increments could be useful as well.