I sometimes use the 200MP mode on my phone - it does render more detail in images and sometimes that's what I want.

To counter the unnatural look of noise reduction I often add a film grain effect.

Film grain is great for dealing with crappy noise reduction, but I found no good fix for oversharpening yet. Gaussian blur doesn't do it.

Yes, good point. When I look at prints from the 200MP files I like the amount of detail, but the sharpening is quite obvious.