The xp and jobs plugin looks great, but the simple crops plugin would be terrible for vc. "harvest multiple crops at once" I assume it also automatically replants them, which would only lead to players creating farms to gain more money, as for anyone who would use those crops for food wouldn't need more than a stack, or can easily /warp pub, or kill some livestock.
Say someone took a nether wart farm, maybe a simple 10*10 square, with 100 nether warts planted.
On average around 2-4 nether wart would be dropped, so let's say you got 300 nether wart out of slowly replanting each and every one, that would lead to 2.25k from selling to the server market (300 * 7.5)
Now with fortune 3 that could lead to 3k, which doesn't seem that bad right?
With this replant/op farming plugin, that would easily increase all of those numbers, and more farms will be made for the sake of money. (Which you could find preferable to existing redstone farms . . . less lag)
Now you could easily make a 30*30 square, with soul speed and make 20.25k ( 900 * 3 * 7.5 ) within literal seconds, I don't think I need to explain how unhealthy this is for the economy of the server (Especially when 2700 nether wart costs 40.5k from the server market). This plugin is mostly efficient for older players on the server with access to those materials, which may make it harder for new players to start out, and get their own money as well.
You could also lower all server prices on crops if you'd like that as an alternative.