Since farming is really fucking hard, we should have some farming tools that are attachable to the tractor. (eg: Curvilators, seeders, etc.) And also some new vehicles that have their sole purpose for farming. This will make RP servers much better and also new mods.
Just adding “more things” won’t be the best solution, which is thankfully why Nelson has confirmed he wants to implement new and advanced farming mechanics such as irrigation systems, as well as some degree of automation.
In addition, it’s implied that in UII plants will actually need things like sunlight and water to grow.
(Interestingly, another confirmed upcoming feature related to farming is being able to grow your own dyes so that’s cool too?)
Also, in response to OP’s suggestions, I think it wouldn’t be out of place to find a regular tractor in a farm, so having things such as simple plows and harvesters you could pull behind it would be alright by me (maybe even a full combine harvester could be found in only the largest of farms). Just nothing too over the top.
I don’t see how it could hurt the game and why would it not be useful, Ull will have more complex farming mechanics so I don’t see why it could not be added. If it gets added to the game I’m sure it would have a use in the game.
What we need is more types of farming mechanics, as well as “more things”. You should be able to craft many different foods, use different types of farming, etc. I remember back when I used to play Minecraft; damn all of those farming mods (Pam’s, Hunger Overhaul, etc) were great! All we need to do is implement those into Unturned, combine them with existing U3 mods such as More Farming Mod, and add them into U4