import/export is high on my priority list, as is the automatic conversion tool. The integration into delete as spam was my reason for writing this in the first place...
Currently I'm working on a total rewrite of one of my other mods for vb4; after I've got a release out on that I'll be allocating time to my mods based upon their popularity. Major bugs (of which there shouldn't be any; this mod has been out and used for quite a while on 3.6+) will be fixed; but features are really based upon how much free time I have.
Was there any specific feature you are particularly after? (If I have to guess, I'd say the integration into delete as spam

)