However, based on Nintendo's past consoles and compatibity and marketing issues, I dont think any of these will ever come to fruition.
And that is where your argument fails.
The Switch is not like any of Nintendo's past consoles before, in the fact that none of them also functioned like a handheld. And every single Nintendo handheld, from the 3DS all the way back to the original Game Boy has had multiple revisions and variations.
Hardware Comparison Threads:
PlayStation 4/Xbox One/Nintendo Switch: 2019 vs. 2020