My first feature request is for the cooldowns (in the current dev build) to be stored between server restarts. Pretty straightforward, no need for more explanation.

My second feature request is to add a way to display the remaining time until the cooldown expires using a message. This could possibly be done in the following config:

otherdrops:
    MOB_SPAWNER:
        - tool: ANY_OBJECT
          drop: DENY
          flag: UNIQUE
          cooldown: mobspawner.$p@43200
          message@cooldown: '§6You must wait %c-mobspawner.$p seconds before you are able to break another spawner.'

I highly recommend making your own option as mine is pretty messy...

I'm unsure what I am talking about with the second part, just add a way to display how long until they can do whatever again.

Can't you separate this into two tickets?

I suppose... it's generally better to have more tickets, but I guess these could possibly be seen as a single feature...

I can... but they are somewhat similar as they both relate to cooldowns

Yeah, generally better to have two tickets for distinct features but I'd rather have the requests than not at all :) Both good ideas but I want to wait until next release.