1) It would also be very helpful on the issue list to have a sidebar there that allowed for multi-selection of all tags for filtering. By default, all tags would be checked, and as you uncheck tags, issues that have that tag that was unchecked would no longer be in the list. There would also be select all/select none buttons.
Right now, you can view all the issues with a specific tag, but you can't view all the issues without a specific tag.
For example, if I want to view all my issues that don't have a "Waiting" tag, I have no way of doing so.
2) I also think it would be prudent to separate out "issue type" tags from "issue status" tags just like it was done on the old site. This would work nicely in conjunction with #3:
3) And while I'm on the subject, I would also very much appreciate if the issue list returned to a normal table-style list instead of having two lines of text for each issue. Not having everything in its own column makes it really difficult to scan the list quickly for what you're looking for.
4) I may have already suggested this in another thread somewhere, but it would also be really nice to be able to colorize the tags. Again, its an issue with scanning the list for what I'm looking for - if everything is the same color, I have to read every single tag, but if there were colors, I can find exactly what I'm after at a glance almost instantly.