A few questions...[breed art/breeding]

So first of all, did different artists do the different breeds because I noticed some are done more clean and some or more painterly. Like, I don't mind the Mustang [my breed of choice] being more rugged looking since it's a mustang but I feel like the paint colors and roan do not compare to the awesome looking versions on other breeds, like the quarter and paint horses. I feel kind of cheated there....Will there be an update on those?

Secondly, I noticed a pedigree on a Mustang for sale: http://www.equiverse.com/pedigree.php?id=477515

I see one horse had Thoroughbred and Arabian parents. Was that on the old EV and no longer able to crossbreed? It won't affect my breeding I was just extremely curious about that.

During the recode, some breeds were culled due to lack of popularity. People who owned one on of the breeds that was culled were allowed to change the breed of they're horse, and so one person made a Mustang, another made a Arabian, and so on.
So that's why.

Thank you Ponies I just found the answer to that in the Help. Guess I should have looked around for a few more minutes!

If I remember correctly, we used one same artist for breed arts. However, it was a long progress in completing all breed arts (it took at least a year or two) so it is possible that the artist' style changed over time :)