Hi,
I think its pretty easy to implement and would be helpful as in manual blasting you can only rinse the part with the gun and not the chamber and sometimes if you work with multiple objects than you can rinse them only one by one as the chamber is full of powder.
The feature we need is for example if we step on both pedals at the same time the cahmber rinse function is started than we can rinse the chamber for couple of seconds than start to rinse the parts.
Hope you can implement this in the near future.
If you need any other details about this feel free to contact me.
Thanks,
Mate