2

There is a search function at the top of oqueue, looks like a spyglass. Hit that, and type 2, 3 or 5, and bam, should be mostly sorted. You may get the occasional false positive with someone looking for a 2k+ rating coming up under your search for 2s, but for the most part, it works just fine.

Seems like too much work for the effect, sorry.

Personally I like the big red button, it's idiot proof. Or so I thought....

It's fun... Kinda a pre count down of doom against the other team....

Best way to get rid of it is to leave group and never bother anyone again. Why would you queue for a group and then not accept the join battle?