As someone who paid full rip for a Head/Remote - I’d be more than a little pissed if the Player got everything for so little.
I completely agree with your point. An idea I discussed with a friend is that users who already own a registered Kemper head, rack, or stage — like myself — could unlock all additional features on the KPP if registered under the same account, making the Rigs fully compatible. Paid upgrades would remain available for KPP-only users.
Indeed, the Nano Cortex is quite limited in terms of the number of effects. I’ve just now seen its features and specifications. You really can’t compare the products 1:1, and the KPP is, without a doubt, a more complete solution. The Nano Cortex only real advantage is the ability to do captures.