It’s unfortunate that we can’t swap lenses ( removing the native plastic lenses ) on smartphones , as it would open a world of multispectral imaging possibilities not constrained by the plastic one size fits all optics on them. IMSAIGUY has an interesting video on their design. We could recreate the 3CCD cameras quite cheaply.

I was glad to hear that you nearly ended up recommending the EM1 mkII/III. I have been mulling over this dilemma for sometime now, as a Canon user for years, bags of L glass, and disappointed with where the whole industry is heading, greedy camera companies moving backwards, and around the block, I ended up buying a discontinued camera, the EM1X, and hence counting myself out of this camera rat race .........I think Olympus put their heart and sole into this model, before they sold out..........the rabbit hole goes deep....!!!