I would like to switch from minecraft java to c + +.

[Zentdayn]

Someone started creating Essentials, so if you want to use theirs you can... WorldGuard is not needed as of now because there cheats that work on Java won't work here. In fact, most nobody can hack the system with 99.9999% of all the cheats out there because they are built for a different API.

Anti-cheat systems are not needed as much plainly because the server works differently.

Pretty sure this is somewhat incorrect, i used to own a server and had to try to get rid of some "cheats" and to do so i looked up on how they do it and as far as i remember there are cheats that consist in sending invalid or impossible packets things like lie about the position. ( there are bunch of them that fit in this category which are more like 'hacks' i would say ).
Most of these can be beaten quite easily, with a bunch of sanity checks.
The other category consists of 'cheats' that do 'superhuman' things such are
hit everyone near you.
Tried to develop a fix for this last one with partial success but this kind is harder as they are not impossible, just highly unlikely.
I'll test to see what kinds of things are possible.