Without the 100-round limit, there are known instances of harpies capturing current workshops (at a speed of 6) on morale. Furthermore, I believe it's important that one of the rules (in the event of a stalemate, the attacker must retreat) is now technically implemented.
I understand that in some cases, this changes the gameplay, but I don't consider it a major sacrifice. Yes, now the attacker may sometimes have to retreat in a non-stalemate situation if they don't trigger a morale effect. The Necropolis and Graveyard are essentially free objects, and I don't think it's a problem that they become less free, meaning that, along with the Angel for reliability, units like the Knight or similar will be needed.
I would like to note that the 100-round limit, as well as diplomacy with the Laboratory, can be disabled in the template editor. You can also change the number of rounds there.
Then it's unclear why Steel Golems were introduced at all if the introduction of the 100-round limit also solves the problem with the workshops.