I think a simple /trade command would be helpful as it would really prevent scamming majorly and it could make trading items, money and experience easier. (This is a suggestion for op pvp, kitpvp, and skyblock mostly [and maybe survival])

You could blacklist items that are illegal to trade for example on skyblock dirt.
You can also allow moderators to spectate trades.
As well as an anti-scam feature that prevents players from taking out items last second.

I've put some plugins below if interested in checking them out or if MaTt wants to make one that's cool too:

[Trade Plugin]
[Trade Plugin #2]

 

Support yea this would be good better than being scammed oh and the links arent working at all

 

oh oops you may or may not need a spigot account to see those plugins my bad.

 

lol

 

idk why they removed it support

 

Yea support

 

Trade was a command on mineverse, but the plugin was removed due to a bug within it. I’m not sure when it will be added back, I would assume when the bug is solved.