Okay you are all over the map and mixing up a few things and it stems from unclear requirements or ones that are very confusing.
Suggest read this article…
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1
easiest thing to do is move the subnet OFF the bridge (just let it do bridging) and use another vlan instead…
In terms of requirements, think of them as use cases.
Determine the users/devices or groups of users/devices that need to be able to do tasks (talk to a printer, reach the internet etc).
Once those are all clear in your mind, then a configuration will be much easier.