i cannot understand why canon should produce an entry level FF. They have one it's called 5DmkII
I am one of the customers who currently have a EOS 450d and would like to upgrade to FF. As photography is still a hobb though a concept like an entry level FF is just what I would need.
As to the 5D Mark II being the current entry level FF I can not speak for everybody, but even though the camera is of course still very good, I do not want to buy a 3 year old product. It is of course a pure psychological reason, but if I buy a new product I prefer to buy something released not so long ago.
Now with this attitude I am not the hardcore photographer, I know its more the tech geek attitude, but looking at the market canon will - in my opinion - be able to sell a lot of entry level FF to hobby/enthusiast photographers if they release a new FF model. Its just the same as with mobile phones, the old ones are not crap because they are old, but the consumer expects she/he is getting more for the money with a new model.
Therefore I wait for a entry level FF, and I guess I am not the only one right now