There are 12 hours cooldown on attacking someone after menhiring.
It's a problem on only 1 specific instance right now because of what happened on COM1. It is a very unlikely situation that wouldn't happen elsewhere. And regardless, it will probably won't happen again. We have to watch the bigger picture on this feature.
The problem regarding resources piles given back is major. A spawn account who spams fields and quests can easily reach 300/400k resources in spent in fields and they get those back when menhiring. Which opens for insane raiding opportunities for absolutely free. This is something anyone can do and that has a much wider impact on the current gameplay.
Regarding the rest, I think menhirs should be allowed until the account is in Beginners Protection, which would force people to take a decision on their gameplay on the server.
This is not just a COM1 issue.This will now be repeated everywhere. Because the mechanism is already worked out.