For someone putting in 7.5K into D3, what is another few more for almost 2X the resolution for the best in the market? Price is not the main issue, value for money is. Show me that its worth it, and i will pay. Basically if D3 gives at least 16-18MP i will pay for it. However now we are looking only into same MP as 5D, at double the price. For most people here, i believe they have already dump in at least near 10K..
I will no issues with D300, looking forward to see its improvements over D200, which i already have but came with some disturbing issues (low batt life, some errors, rubber grip peeling etc), otherwise ok.
People who use SLRs, have their reasons to do so. Read up more up to date magazines and interviews you will know. Eg. people who do big time publications, covering very lucrative action sports, money is not issue at all. And just because i use SLR, doesnt mean i dont need or want high resolution. Of cos, shooting ADs like you do, a 6MP will more than suffice since usual prints are 4-6R, but there are applications that does.
Lastly, I am already using both systems, and others too.