+1

Don't really care about ugradeability/customisability, just make it great OOTB...
So long as it's quite versatile,* & has excellent built-in functionality/utility/usability, that's enough.
Then you'll have a solid device, that won't cost as much as a device that also focuses on ugradeability/customisability.
But I know from an ODM's POV (i.e. you), the latter might be more appealing...

*& hence mitigates the need for ugradeability/customisability