Game Input MultipleXer

I'm very excited for this!

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I know because its totally new, any answer to my question may be hypothetical or unsure,
but could it work in place of the Teensy for GIMX? (specs at link below)

https://www.raspberrypi.org/blog/raspbe ... w-on-sale/

I only recently discovered GIMX but am excited for expanding gameplay options.
I am also interested in possibilities of pc-side scripting and automation of certain tasks on the console.