While you have thought this through and I agree with most of what you said, I have a problem with this statement...
Originally posted by Anton Magus Pentax tends to be more expensive than the virtual equivalents from Canon or Nikon.
/rant
Many people actually shy away from Pentax because the lower price for features. They feel there must be a problem with Pentax cameras to be sold at the prices they are.
Pentax's entry level dSLR (K-r), is more expensive than the entry level dSLRs from Canon (XS) and Nikon (D3000). But in features, the Pentax K-r compares closer to their mid-range models, Canon 550D/600D and Nikon D5100, and still costs much less.
While I think Pentax prematurely discontinued the K-x and could use a greater range of models, the offerings for both Canon and Nikon borders on the ridiculous. They have so many models that even their own users are confused as to what camera model is right for them. Canon offers 13 dSLR models at this time, ranging from $550 to $7000. Nikon now sells 10 models ranging from $500 to $8000.
Using B&H for pricing the Pentax K-r kit sells for $625. Between the Canon 1100D/T3 and the Nikon D3100 kit at $599, and the Canon 500D/T1i kit at $649. Another forum (Reddit) I spend time on, anytime those Canon cameras are questioned the Canon users say to stay away from those 2 dSLRs and suggest spending more on an upper range.
For the price of a camera with nearly the same features as the K-r, say the Canon 600D/T3i kit ($899) or Nikon D5100 kit ($800), someone could buy the Pentax K-r with 18-55mm F3.5-5.6 DA-L and 55-300mm DA-L kit for $786 and have money left over for the memory card.
/end rant
I would like to see an expanded lineup for Pentax. Maybe a model like the K-5 without weatherproofing to fill the gap between the K-5 and K-r. And then a full frame model, a full frame with weatherproofing, and a medium format without weatherproofing to fill the huge gap between the K-5 and 645D.
I really think the sale to Ricoh is a good thing and have hope for a more aggressive sales plan and a faster R&D to store shelf roadmap.