I'm happy to see the KR project terminated, the bikes were never competitive and ruined the career of KRJnr who was a world champion on the Suzuki before he changed teams and rode the uncompetitive KR machine. I think the KR team had a good go but just couldn't get a competitive bike with limited funding and development etc..
Not so sure I'd like to see Aprilia back either until they can actually justify their existence. Their prior MotoGP experiment in the premier class was a disaster and they seemed to go from bad to worse. Any rider unfortunate enough to ride an Aprilia in the top class is commiting career suicide! It'll be a frustrating development phase and poor season for them to say the least.