Okay since posting I found this: http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1
I should make a vlan just for printers and devices that need to be used across vlans.
And then this: http://forum.mikrotik.com/t/mdns-between-vlans-with-just-bridge-filters-look-mum-no-containers/173295/61
Now there IS an mDNS repeater built in!?
Please feel free to weigh in, especially if I’m off track.