@cadcoke5 - Thanks for the feedback.
Adding more sensor modules is something we've thought about from the beginning, but requires a good deal more work than just fastening on additional modules. Current communication between the sensing element and the non-moving circuitry is done by i2C through a slip ring. We are already pushing the bandwidth limit of this kind of communication. In order to add additional sensors, we would need to switch to a higher bandwidth communication method, which is something we are working on for our next version.
We think it's going to be much more effective and cost efficient to work on improving the speed of a single sensor, rather than bulk up the size and price of the device with multiple sensors. The single sensor element may end up having multiple detectors, but on a single board with a single optic.