It's been a few years, but Nikon did try exactly this: https://www.nikonusa.com/en/nikon-products/product-archive/c.... I'm going to guess that the market reception was at least a little chilly; it's not something they've tried again.

Android ergonomics in a camera, please no.

I think an actually working quick way of getting photos transferred to a phone out of the box would be the better step. That stuff's optimized for a phone, use a phone and keep it out of the camera, which likely will have a longer lifetime and adds a bunch of other constraints.

But then you wouldn't have features like this one, which requires merging multiple close in time images. Since the professional camera makers assume that all post-processing will happen on a computer at a later time, they don't work on in-camera features like this.

In-camera exposure stacking has been a standard feature in DSLR firmware for some years now.

A burst of 150 raw frames all within 1 second even the top end slr's can't do, mostly because they don't have enough RAM to store all those raw frames, and because sd cards aren't fast enough.

Without all those raw images, you won't be able to do this kind of postprocessing after the fact.

You're right that SD cards aren't fast enough. That's why high-end DSLRs support the much faster XQD standard. There are no DSLRs (and precious few if any still cameras, period) that can do 150fps, but 15-20fps isn't at all uncommon in professional lines, and most cameras that support that frame rate also have deep enough buffers and fast enough XQD interfaces that they can shoot raw at full framerate for 10-15 seconds before they fill the buffer and slow down.