Comment 7 for bug 290524

Indeed, having a unified search box and get rid of the search button would be great. But it means a complete refactoring of the search functionality (add to the index the missing fields, change the entry field to something like a combo, rework the search filters, ...). Secondly, debian only have the standard search. And thirdly synaptic will be superseded by software-center in 10.10 .
So, I don't think it's worth it.
But that's only my opinion.