The only DQ is improper number of toes. You don't want extra toenails, fused toes, web toes, etc....all I try to avoid.
Short outer toes are as Hawkeye stated brachydactyly... as ABA standards its not a DQ, and a very minor fault in the grand scheme of things...I personally cut those birds out last if at all, as it is not a big deal and simple to get rid of. However I won't breed one that has a SUPER short toe and no nail. if it has a decent length toe, or is somewhat short with a nail, I will keep them to use if they are an otherwise nice bird...
The 5th toe is usually longer(and should be) than the 4th toe and SHOULD kick back in a curve, it shouldn't be straight. but its not a big deal in the grand scheme of things really...
The best feet are spaced nicely, with the 4th and 5th should not be too far from the interior long toe (#3 I guess) The 4th and 5th should be close together forming a nice V and not widely spaced apart.
If you are an ASBC member go to the album gallery and look for the feet and toes album, lots of pictures of bad, decent, and good feet/toe pictures for you to look and compare with commentary from some members on many of the pictures.