They can unlock for fee for only Players owners.... I'm sure some don't meet the problem i have cause they don't have a Stage/Rack or Head on the other side....
Coming from a Player owner, I like this idea. I got the Player because I know I don't really need the full fledged Stage/Rack/Head (at least for the time being). However, I would like to have a couple of extra blocks for particular sounds. I only found this out after using it for a few weeks. I'd be happy to pay for that upgrade after the fact, rather than adding extra pedals or switching to a bigger member of the Kemper family.