I usually climb alone due to my working hours, but later on during the week I discuss the new routes in the gym with friends, and usually what happens is that I find out that I had no idea what the intended beta was, and that I completely broke the intended beta. Sometimes I make it easier, other times I make it much more difficult than it's supposed to be.
Usually my friends are in the gym when the routes are being set, so they know the beta, but I am not, so I almost never know the intended beta, and since I climb alone, I usually make it up as I climb. So, it happens pretty often.

Climbing on the moon board really helped with my sit starts, something that I was fairly bad at. I just couldn't get myself off the ground.

After dedicating a few months to climbing on the moon board, besides getting stronger in my core and grip strength, sit starts became much easier for me, since, at least in my gym, the moon board sit starts are much harder than the regular routes sit starts.

Besides that, I believe that supplementing climbing with weight training can help a lot with it.

I know some climbers that have been climbing for quite a few years, and while I do not know how their feet were before they started climbing, I can say that their toes do have a shape resembling that of a climbing shoe. Mainly, the toenails have a curve to them, and their toes are sort of squished together.

Though, this doesn't mean it's necessarily because of the climbing shoes. I know people who have similar feet/toes that do not climb, and I also know climbers whose feet have not changed, so it's hard to say for sure if climbing shoes change the shape of your feet or toes.

I have been climbing for a few years now, and my toes seem to be more curved now than they used to be. The tips of my toes used to all be round, now they are sort of "pinched" in the corners.