The task queue page is very useful in two scenarios

1. A user has a build that isn't not running yet and he wants to check how many builds waits before it
2. A developer wants to check if copr is not stuck

This RFE aims to enhance a developer experience in the 2nd case. One has to compare the amount of running builds vs the number of pending builds and basically, when there is a small amount of running builds and hundreds of pending builds, there is a problem. Graphs in the "Statistics" tab are very useful for this, but I would like to suggest also adding the count of builds in the particular state to the tabs. I.e. modifying the menu

Importing | Pending | Running | Statistics

to

Importing [0] | Pending [120] | Running [3] | Statistics

AFAIK there should be a standard way how to do this in bootstrap. If not, I would literally add the number in [ ] brackets.