Help with Yamaha upgrade

I have an older Yamaha DTX Module with four PCY65 cymbals (one used as the high hat) and four TP65 pads.

I'd like to upgrade the module so I have access to more sounds, and the compatibility to use multi zone triggers, especially a mesh snare pad, EDIT: and half open hi-hat.

I don't need the latest gear, or even last year's gear, I'm looking for a budget upgrade that will get me to an upgraded software/tech place.

Any suggestions would be great!