This talk about abandoning Pentax... it doesn't make sense, it's not a solution.
Actually I cannot think of one fundamental problem with Pentax; there's marketing and perception, and there are some technical issues like lens line and features in need of improvement. But we're talking about a brand which survived Hoya, and that's no small feat. We know that "Pentax" is working; the issue here is how to improve it, not how to get rid of it. And I strongly believe that Ricoh Imaging is planning to "fix" Pentax.
Besides, every single issue would be present with an imaginary "something else" from Ricoh Imaging(*). Marketing? Check. Perception? Ricoh is not a known consumer brand. AF? 4K? Same. Lenses? Worse.
And maybe the worst of it is marketing and perception... we can see people absolutely convinced that Fujifilm is breaking sales record after sales record, for example
(*) Products like Theta, with little competition, would naturally behave differently than yet-another-MILC.