Real quick one; can you still only use SLAAC to hand out addresses? Or is there a way to use a DHCPv6 Server to hand out addresses not just prefixes? General consensus is no but I wasn’t sure if that had changed at all since the forum posts I had been reading.
RouterOS v7 as of now the latest whatever beta, only supports ia_pd, not ia_na, so answer is no. You should contact MikroTik official support and ask them to implement this instead as base for DHCPv4/v6:
https://www.isc.org/kea/
It even supports DHCPv6 HA:
https://kb.isc.org/docs/aa-01617