It's a nice idea, but I think that Apple is gonna say that their products hold value extremely well and so sell yours to upgrade to the next model...believe me, I wish that they'd be upgradable also
So do I but look at all the complaints across Apple forums about Apple's deliberate decision to STOP you upgrading almost all of it's products.
Pretty much year by year on every product they make it less upgradable so they can make more profit.
The latest one being the new slower, non upgradable Mac Mini.
The take a product a user CAN upgrade later on, if their needs change or if prices of those items come down, and solder and glue it down so you can't.
So generally now an Apple customer has 3 options:
1: Buy the device they NEED TODAY, then after some time like to upgrade something for price/needs reasons, they cannot upgrade so just suffer with what they have.
2: But the device they NEED TODAY, then decide later they need something better, Sell what they have and buy another higher spec from Apple.
3: Give Apple more money TODAY for a spec higher than they need, to future proof themselves as they know they will never be able to upgrade it in the future as Apple has made this impossible.
Either way, and Apple fan or not, this is a horrid and anti-consumer business practice that we all know if being done deliberately.
In a watch, I could actually forgive them, as its a tiny device and generally not something a consumer every changes.
But it certainly not Apple's current business practice, in fact it utterly goes against their business practice.
You either pay THEIR VERY HIGH price for more than you need NOW, or you are stuck with it, have to ditch it, and buy another one from Apple later.
This would be forgivable if making things non upgradable made the price fall like a stone.