Deniska: I'm glad you like it :) But as for updates, right now I'm still on holidays, and only on the 19th will I have time to work on it.
Though I personally love Sony's OSK, I'll try and find some Javascript keyboard somewhere. Do you happen to have a link to a good one already? (GPL would be the nicest I think.)
About directions, I like the approach (having those numbers keeps MapThis itself simpler), and I don't see any problems putting it into my script. Do you already have a complete list of all the directives used in Google Maps/future MapThis for directions?