Just a friendly warning, it’s very easy to mess up the configuration when getting to grips with the new way Vlans are handled via bridge and it seems if you change the bridge PVID wrongly it’s quite possible to get in a state where you can’t access the router at all even with mac-telnet, at least it was on the RB450G I use as a switch.
It might be worthwhile keeping a port off the bridge to get back in (or of course if you have an RB with a console port you can fix it that way)
That aside however The new way of handling Vlans appears much more flexible than the previous way and should allow for various configurations that were previously not possible so please keep up the good work on improving the bridge/switching side of the routerboards.