Carts

[RedVanGhoul]

I haven't tried 1.20-pre yet, but I'm pretty excited for the mount and sailboat systems. Seeing that some of the creative only blocks also include wheels (I assume for trader wagons) I thought maybe something we might see later on would be a craftable cart that could be pulled by our noble steed (or our poor buddies who we tricked into buying this game). Could make nomadic life overland a lot cooler.

[-Glue-]

As someone who loves making paths and infrastructure, I was thinking the exact same thing when I saw mounts were coming. I think it would be pretty difficult to smoothly implement into a big boxy voxel game such as this. Carts would either be left floating off blocks, or rest at a sharp angle when not on the same block level as the mount. I don't see it looking all that pretty anywhere but flat land, without some clever ideas.
That being said, I think it could have some really awesome implications. Such as caravan carts that can carry players, or animals. Or the ability to place filled chests or barrels, to quickly move them long distances. Or additions such as plows. Or even a covered cart full of tool racks, so you can bring everything you need to distant build locations.

One thing I think would be really cool to add to the game, and would work amazingly with a cart system, would be making large, heavy objects cumbersome to hold. So like, an anvil, large chests, or just full chests/barrels, would be heavy objects, that you need to carry with both your hands, or in a bag slot, and it would slow you down. However, you could load them onto carts to move them with ease. You could even have wheelbarrows or hand carts for early game.