Плагин Fresh Mod для SOD

is it technically difficult to make it so that using the freshmod in multiplayer is impossible if it's not installed for both players?

Yes, there are certain problems with this; the network code needs to be sorted out, and so far no one is ready to spend their time on it.
I thought about simply displaying a "Fresh Mod" label under the player's nickname if they have it connected, but that also requires knowledge that isn't available.

Added after 7 minutes

Wait wait wait, stop, fresh mod 1.0 is enough, there's no need to integrate the second hotfix into SoD; respect for the first fresh mod, but what you're pushing now is garbage

The last thing I'd want in the world is to make a second hotfix.
I simply added some obvious interface "perks".
What is the sacred point of:
- deleting an unnecessary hero, hiring a new one, moving him out of town, and all that just for exchanging artifacts or armies
- frequently spending 200 MP of the main hero just to find out the size of a clue?