The new asset browser is still very new but I believe that PB2 devs shouldn't focus on anything else but adding tags feature in the asset browser. There are lots of interesting assets buried because the asset browser only searchs by the specific name of the asset. What's worse is some assets are named without including any keywords that might ease other developers in searching and reusing the asset.
Also I believe the tags should be controlled by moderators that manage the verified assets too. But this is just my opinion.