Honestly, you seem pretty set. If anything I'd maybe add a utility vca and more another modulation/envelope source. The real question is what do you need, what are you missing when you patch?
If you're set on using your Alesis keyboard look into the Befaco Midi Thing or the Noise Engineering Univer Iter. Otherwise you can go with a keyboard with CV outputs or you probably have enough space in your rack for a TSNM or another Pressure Point or similar controller.
You could also consolidate down and move your effects skiff into the main rack if the sizes here are representative.
Don't let unnecessary GAS get you. you have your bases covered, practice and master your modules and eventually you should naturally figure out what to weed out if it's not working for you or where to expand if you're missing some functionality.