Hi Pyxie
I think the demand for those cats depends on who is looking at it or is your potential customer.
I can't resist a good old Red Tabby and all retired furs are so convenient to breed with our starters, as Serena said also, because when we get that fur back we know for a fact that can't be the hidden fur of our starter as well.
I breed Red Tabbies and White Russians always lack of room didn't let me adopt the Fawn yet but the chateau 3 spot for example is in my cattery.
In general I think we should breed what is pleasing to us it gives the most fun in breeding KittyCats is my experience.
Otherwise it is so hard to decide what to breed or not because things go so fast >.<
What today is highly appreciated is a week later old news so I tend not to go with the hype too much unless I like a trait very much.
P.S. Why I think the Red Tabby is extra fun to breed with is that it is the most dominant not Genesis fur so far.