I have found this topic interesting and at times entertaining.
If the OP wants to change, fair enough, its a free world, they can do anything they like.
I'll keep an eye out on fleebay for the K200d, having owned one in the past, its a great camera, perhaps it has one of the best sensors for landscape/outdoor photography.
But I wanted to share some insights I have gained over 3 years of shooting, and my recent experiences with a camera club in my city.
I have spent the last 6 weeks with a group of 'average' people as they complete a photography course with the camera club. As usual most are Canon/Nikon owners.
So having once considered switching to Canon, I have looked at/held/and used most of the cameras they offer including FF.
Would I switch? No. Have I felt I have missed out on a shot because of my gear and Pentax's limited lens collection? No.
Photography is not about the gear we have, or what brand we use. The professional photographers mention this all the time. Photography is about capturing the moment, telling a story, using composition, light, etc....
Some of those owning FF Nikons and Canons barely know how to turn them on. If that wasn't bad enough, they don't have any intentions of owning lots of lenses. They have a couple of general zooms (as most people have).
Am I happy with the lens collection available to me? Yes and no. Yes I have everything I think an above average photographer either wants or needs.
Can I do sport? Yes. There is the Sigma/Tamron 70-200 2.8, or the Pentax DA*300 or 60-250. Want longer, get the Sigma 50-500, or one of Sigma's other long zoom telephoto lenses.
Want weather proofed wide/portrait, or portrait/med-tele, get the Pentax 16-50 or 50-135. Sigma also have the 50-150.
If you want primes from 14 to 100 there are some amazing lenses.
Want cheap zooms no problem. Cheap weather resistant zooms, no problem.
Macro, the exceptional DFA100 WR or the Sigma/Tamron offerings.
Wide angle, Pentax 10-17, 16-45, 16-50, 17-70, 15 and 20. (Plus Tamron/Sigma offerings).
What more could you want. Flashes, get a Metz (even though they are rarely used these days due to the exceptional sensors in the KX/KR and K5).
I can honestly say, shooting side by side Canon/Nikon shooters, whether it has been at sporting events, indoors or portrait photography, my gear has not been inferior. If anything, due to its compact and light nature, and with the K5, it has surpassed other brands.
People always mention Pentax's deficiencies, no telephoto lenses, no new flashes, no FF camera, poor AF for fast moving objects.
Well just look at the prices for Canon/Nikon > 300mm lenses. There is no way an average person can afford to buy them. Flash, most people just use the pop-up flash. FF camera? The weight would discourage me from using them.
As concerns the AF, I have been to many motor racing events such as (F1, stock car racing, motor bike racing), tennis, world surfing events, world cycle events, soccer, and local Australian rules football, with my K7 and have taken some very good shots.
Having compared my shots with some Canon 7d shooters, I can say Pentax gear is more than adequate.
Having recently upgraded to the K5, I have already noticed a tremendous improvement. Have tried it with some BIF's and a slow Tokina 80-400 and I was impressed.
The argument about Pentax's future is irrelevant. If Pentax ceases to exist, does that mean your equipment will stop working? Of course not. Does it mean you won't be able to have it serviced? There will always be people who can service your equipment.
Unless you have a sizeable investment (1-2 bodies, 5+ lenses), you will always be able to sell your gear, and recover most of your initial cost.
So, if someone wants to change brands thats fine, but don't do it because you think your gear is inferior. For most of us, our gear is far superior to our own skill level.
Cheers.
Maybe I'll just have to get over it, huh? 
