I don't really miss full weighted action, butg I do experience a discomfort when playing on smaller, flimsy-er keys. I doubt that I'll ever go the acoustic action again, but I DO demand a good, solid feel and full size (by PIANO standards) keys.
I'm sure most players can adjust to most anything if played enough, but the truth is .. I don't WANT to get comfy with a smaller pattern. I want to keep my comfort level intact so I can play all full size instruments with the same relative ease.

I refuse to have a manufacturer try to tell me the lie that "xyz" keys are full size, when they clearly are not. I'm not mad at Yamaha ... I still think I'd like another Yammy some day, but they have a lot of work to do before they win my trust again. They need to address a few important pro-related issues .... and then I'll give them an audition. Just like with my relationship with my clients - they have to earn the right to work with me. Past performance doesn't buy me dinner, or put shoes on my kids !