I think the market has a lot to do with it, and Jens seems to feel that the best market for these cards is people looking to play games. WHDLOAD machines basically.
I would guess that he's probably right.
An inexpensive, new, professionally made 68020 card for the A500 with a bunch of RAM (and I would think it would have to have storage of some type, CF/SD) would appeal to the most people out there..
Yes, there are people who want really fast cards, but fewer of them are out there, and fewer still who don't already have something faster...
Jens has said tho, that although they are talking about designs seriously, his main project right now is Indivision AGA's Mark 2's (or whatever they are calling them), so it might be a little bit before the A500 items get more serious.
Just thinking of a few other things:
One, it will depend on how easily or not he can get stock. He apparently went with the 68030EC for the lower end 1200 cards, in part because he could get them in enough quantity at a decent price..
Two, he's looking at these cards as "gateway" cards. Not as in the cow computers, but entry level for his other products. He wants you to use your Amiga enough that you want an Indivision and whatever else they have. But if the initial cost is too much, it will keep people away before they get hooked..
desiv