Unity is my favorite developer tool. I think it is fantastic for both prototyping and production. I am (used to be) a VERY strong advocate for the platform. My current product won't be affected by these changes.

I'm still absolutely and 100% against these changes and am lobbying internally for us to explore different 3d engines not because of the price changes but because Unity has announced, loudly, they do not respect their own user agreement and may change it retroactively(!!!!!) at anytime.