Ah, stroke counts seem like a logical thing to add to our Radical info in Chars - thanks.
We'll see if we can get that 說文解字 in too.
As far as searching by tags, this one we're still working on - the basic problem is that every dictionary has a different system of tags and a lot of them don't really map cleanly to each other. In GR's case the problem is compounded by the fact that they don't tag abbreviations in the data files (often no way to identify a particular abbreviation except by a find-and-replace for it with some manual checking to make sure we don't pick up a lot of unrelated things).
But once we solve that data file problem the main issue is coming up with a UI to let people search for specific tags in a specific dictionary - will have something to do with the larger relationship between the Search and Browse screens that we're currently working through, clearly we need some way to do a search on a specific dictionary but the current approach of awkwardly tap-holding on the dictionary switch button to pick that dictionary really doesn't seem ideal.