What needs to be improved VISIBLY on my tekes?

[Cydonia]

So I'm breeding Akhal tekes, and I'm going after visual conformation. I have a pretty good eye so my first generation came out decent, but what do you think needs to be worked on?

http://www.horseworldonline.net/horse/profile/13908 Awful thick and leggy, going to breed him to my shorter and lighter mares

http://www.horseworldonline.net/horse/profile/11536 VERY short and thick. Like holy * batman short.

http://www.horseworldonline.net/horse/profile/25057 Looks pretty nice so far, I'd wish I could throw a longer tail in there thugh, hate the rat tails I have going on :/

http://www.horseworldonline.net/horse/profile/437 Thick, long neck. He's got wayyy to much neck so I need to be careful with him, although he's training up like a sonofa

http://www.horseworldonline.net/horse/profile/10153 Outside blood, I think his chest needs to be a bit lower, and his neck somewhat thinner. I don't want ewe or swan necks though, so I'm going to have to tread carefully on that line.

http://www.horseworldonline.net/horse/profile/21838 Outside blood, She needs more height but I think that's an issue with mares everyone is having

SO, anyone have tips on what needs to be improved? Thank you!