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Over sampling will not really net you any gain in detail unless Conditions no are perhaps exceptional and allow you to get right down to the theoretical limit of your scope. I have found that my marginally undersampled combo of an ASI294 on a 72mm refractor produces noticeably squared off stars, but with enough well dithered subs to control the noise that results, drizzle processing recaptures a lot of the otherwise lost detail and leaves me with a camera that is pretty well sampled on my SCT.
I would love to see a mono version of the 294 as it actually has about 1um sub pixels rather than the 4.63um RGGB “pixel” that is captured. Basically the un debayered output is 2x2 binned pixels of each colour which combine into a single RGGB pixel that size wise is effectively 4x4 binned on the native size of the pixels.
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