There is a cooldown period when we remove an RC delegation?

Not really but you don't get the RC back, you have to regenerate it, so if you want to redelegate the same RC, you'll need to wait a week for it to regenerate.

What do you think about doing something similar every 1,000,000 blocks for the value per MVEST used in the VESTS to HP conversion? It will have an ID for the VOP to filter them in

What kind of use would you see for it ? It's not really a good idea to base calculations off it if it's for financial reconciliation/tax purposes since the value may not be exact.

Oh and Merry Christmas 🎄

Thanks !