I have two bucks:
Walter 13 mos - New Zealand mutt
Black otter (dad: black, mom: chestnut)
7#15
Tigger 6 mos - TAMUK
Harlequin (parents harlequin but litter mates broken blue)
8#4
Has really long shoulders
My doe is a pedigree red New Zealand
Dad was broken red and everything else red
1. I'm so disappointed with my TAMUK body shape what do I do about him? His plus is heat tolerance and he's got a nice personality. His body shape is terrible.
2. Which buck would you breed to my new doe? (Goals: beautiful color, personality, freezer)
Beautiful color (in the eye of the beholder): Harlequin buck. He and the red doe are both agoutis, so you'll get more harlequins, possibly some chestnuts, maybe more reds. If you use the otter, among others you'll probably get harlequinized otters, which can look kind of messy. The harlequin may carry self, but the otter definitely will (courtesy of his black sire), and like otter, self does not always go well with harlequin. The red doe probably doesn't carry dilute (though it's possible) so most likely no blues or lilacs even if the buck carries dilute. You won't get any brokens or tris from either (one of the parents has to be a broken for that).
Personality: a nice rabbit will typically produce more nice rabbits, but it's not a 100% thing. I've found it's more obviously reliant on the doe, who gives the bunnies her genetics but also her influence (they tend to copy her behavior). Unless the otter is nasty, I wouldn't give either buck the edge here.
Freezer:
@eco2pia is absolutely right - a mandolin shape can be a great meat rabbit. If the long shoulder is nice and full, that will give you good meat, and it's true that the biggest contribution comes from the loin and hind legs. My acid test for meat type is to look at the width and depth of the loin. From the photos it seems to me that doe might have a pretty decent loin, but I can't really tell whether either buck does or not.
You can see how to evaluate loin depth here:
https://rabbittalk.com/threads/crossbreeding-meat-rabbits-yes-or-no.35779/#post-348121
To evaluate width of loin, feel with your fingers right above the knee:
(This young blue otter buck, Honey B, has a fabulous loin.)
You're trying to feel this part of the rabbit:
Is it silly to have a pedigree?
I mean, this will improve my lines, right?
No, it's not at all silly to keep a pedigree, in fact it's a sensible thing to do. A pedigree is simply a record of parentage, which can help you learn all kinds of things about your rabbits without ever claiming they're purebred. Just note their lineage (e.g., New Zealand, TAMUK, or unknown crossbreed).