Once you move into using Shared Spaces, the tags list disappears on the Web App, but this is a super useful way to jump quickly between tags. The logic seems to be that the tags are board specific, but that seems ok to me - can't we just have a dynamic list of tags that updates as you move between boards?

The feedback I got was that you can get to your tags from the Super Search, but this means you've got to remember all of the tags you've created, for each board, which seems sub-optimal. Having them in the menu bar allows you to scan them for the one you want rather than rely on recall.