Can dust cause more problems down the road?

[yjt]

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I have 5 tiny dusts on the sensor on my Q.

It's only visible F/8 or higher, and I typically shoot F2.8 or F4 as my max aperture. 

I emailed Leica for an estimate CLA cost and was quoted $550.

It doesn't seem like a big deal because I can barely see the dust even at F/8.

My question is if it's okay to just leave the dust on the sensor, or will that cause issues down the road if I don't clean it?

I have tape on the ports on the camera already.

[jaapv]

There is no way that some dust on the sensor can harm the camera, it is just an annoyance that calls for extra work in postprocessing. Only have it cleaned if you cannot live with it. It comes  to all cameras including fixed lens ones occasionally.