Round table

After the turn timer in Heroes, the SOD (Sudden Death) time limits are quite annoying.

I agree. It's more convenient, even when the time runs out during battles. Sometimes, for example, you need to spend a long time observing, using the "view land/air" spell, and 4 minutes in SOD might not be enough. In Heroes, if you make one turn quickly, the remaining time carries over to the next turn, which is very convenient.
Here are two examples in favor of a quick time limit.
1) Dreamcatcher, while working at the university, once gathered all his friends for a Heroes tournament, around 2002. He even created somewhat playable random maps. They played Heroes without dungeons. I agreed with everyone to play with a 2-minute limit, and only one player asked for 4 minutes. But 2 players from our group either forgot or didn't want to set a limit and played with no limit. One player couldn't stand it when his opponent took 30 minutes per turn. In the end, it turned out that the opponent was looking for the Grail. :)
2) January 2010. Siberian qualifier. Mike was playing against Dirty Player. Heroes Lite 1800+300. After 8 hours (or 243 turns) of the game, Dirty Player said: "If we were playing with no limit, we would be in the 2nd week right now."