Currently when setting up a Crucible review that involves reviewing files between two tags (which is the majority of the time for us) you have to use EyeQL in the following manner:

select revisions 
from dir /Path/To/Project where not tagged <=START_TAG and tagged <= END_TAG

It would be very beneficial to have this functionality in the Manage Files portion of the UI when creating a new crucible request so that a user would have the ability to simply input starting and end tags instead of having to go through the Advanced Search.