1 - EQ
2 - Metronome
3 - play with brushes
4 - Compressor, reverb, delay
Why do people keep asking for the ability to play with brushes? You could do that on V-Drums because its just modelling the sound, but seeing as the 2Box is sample based I don't think you'll see this addition any time soon. The 2Box has samples of someone playing a snare with brushes anyway, but there is a simple solution: Just use a real snare with your 2Box - problem solved

The 2Box hi-hat/cymbal sounds are very good, but I just think you can never really emulate a cymbal, its sounds and playability are usually too difficult to represent through software or sampling. In a live or recording situation, I would use real cymbals, and 2Box for all other drums sounds. Also a real snare drum if necessary but the 2Box snare samples are good enough I find.
Metronome is already coming in an update, EQ/Compression/Reverb/Delay would be nice but you can always use outboard rack units for that. Don't know how much computing power the 2Box has at all, so I'm not sure if we'll see those things coming, but I reckon EQ could be done. Can anyone enlighten us as to whether the 2Box module has sufficient power to do these things (EQ/Compression/Reverb/Delay)? Perhaps our tame racing driver, Deve Loper, can help?