On the lab review page include the number of sequences currently shown, probably next to the vote count text at the top. Something like “Showing 1,200 of 250,000 sequences.” (So when there are thousands of sequences you don’t have to count 5 at a time to find out how many share selected features.)
Thanks for the suggestion! While I can’t say when we might be able to get to this, it’s a good idea and pretty straightforward to implement. I’ve made sure this is in our internal tracker.