But again, we don't allow nonsense at our table. If you want to attach a rope to the centaur's neck and heave, go for it. Maybe the head won't pop off before it chokes to death. If you want to lift one without killing it or ripping an arm out of its socket, you're going to need a horse harness to lift it
I'm absolutely certain, if we here at Enworld could comb over your game, we would find plenty that is ridiculous. Probably at least one or two restrictions in place to satisfy your personal sense of verisimilitude are ridiculous to someone who is more knowledgeable on a related field of study, simply because you can't be an expert on every field.
For instance, the idea that you can lift a centaur safely with a rope is just nonsense. Completely ridiculous.
Simple centaur fix: They can bend the human part of their body a good 90 degrees to use those parts to help them climb
I mean, let's be honest. They're hexapodal beings that have the top half and the upper digestive system of an omnivore and the back half and subsequent digestive system of a dedicated herbivore. Where are the lungs? Where's the food go?
Climbing is the least of a centaur's problems from a biological perspective and singling out 'climbing' as the issue seems a bit.... Eh.
Yeah, the best way to look at centaurs is that they only look like half horse, half human. In fact, they are 0% either creature, and have a phisiology that suits their particular construction and allows them to interact with the world in a way that wouldn't make it nearly impossible for them to actually function and maintain their species.
So we have a more realistic set of rules implying that Centaurs cannot climb, and we have a ridiculous rule that exists for "balance" reasons.
No, we don't.
Not that they still could fly, they're far too heavy.
If you're changing their phisiology to be 4-limbed, why not also make them lighter? How much bigger does a dragon need to be than quetzalcoatlus? If dragons have body parts that are valuable, which is the case in most dragon fiction where dragons are a big deal that I can think of, why couldn't they have hollow bones, teeth, claws, and scales, with properties similar to mithral? A mithral breastplate can be worn under a shirt, and is so light that it doesn't impair moving stealthily even when turned into full heavy armors. Why coudln't a similar material make dragons substantially lighter than they look, allowing them to be a bit bigger than the biggest flying creatures of the real world, and fly more easily over greater distance and at greater speeds than those creatures?
I guess my question for this whole thread remains the same. Why bend your will toward finding reasons to ban or otherwise restrict a thing (or in this case to say, dragons are too heavy to fly), when the same energy and imagination could be used to find ways to make those things work? What is gained?