$2.2k retail and 20 fps AF could work with the right lens and light, if the AF pans out to be at least partly as good as Canon & Sony.

Sigma's entire differentiator is quality at price for clear tradeoffs, and their lenses often succeed, curious if this might. Tough market, though.

This depends entirely on what you’re shooting and the available light.

I have a very nice tripod that has been in the closet for a decade because I do not have a use for it with what I shoot.

People used to shoot 100iso film without tripods or IBIS… (and still do)

IBIS is nice but you do not need a tripod if you don't have it