Thats a start Scott

What would you like Pentax to include or leave out when they replace the K20 as a “Mid Range” body?
You never know Pentax may even take up some ideas

In A word, yes

The Tamron being much newer than the Sigma, answers one thing the earlier S-wide Tamron was not so good, I have used/owned the Sigma 10-20mm and found it excellent, but that was on a Nikon body, You may be able to get one (Sigma) at a better price as the new HSM is being launched now, but not in Pentax mount just yet.
But if you intend to do use it in wet or dusty conditions then Pentax has the only choice, a DA* lens.

So in other words Mike, stear clear of the HSM lenses if you want to do video on you K7, Or tele converters with HSM lenses.

“Dust and weather proof”,water resistant, not submersion proof and neither is the K7, well I would not like to go diving with one, far too expensive to trash.

All the DA* lenses (Pro)

Bush/ heavy plant/”sign heavy plant”- road crossing=

someone with a sense of humour

Most, I say Most of Jessops staff these days as long as they can speak and turn up to collect their wages, (part time or should I say limited time, in more and more cases), and no photographic skills whatsoever, and are trained to say “You want one of these” and hand you a “starter” Canon/Nikon camera, when you ask for a semipro body.
Why are Jessops so rubbish now? When years ago you could walk into a Jessops store and ask for a reversing ring, and not be told “the jewellers are next door”.
Try it some time, If you can come out of the shop door without laughing.
I rather think the demise of Jessops is sad really but I will be first in the queue for some sale gems, that is if I can beat Mike P.