I ran an icrpg campaign for over 2 years to completion and am now I’m knee deep in my 2nd icrpg campaign. It’s such a good system in how adaptable it is to the needs of the players and to the GM.
the reason you see ICRPG mostly related to dungeon crawls is because of the system is all about keeping the action and suspense coming and coming. a few turns of “safety” is felt by the players and that to me is why ppl want to play rpgs, that thrill of over the top danger around every corner.
My advice is when even running towns where players can shop and chat with npcs is still a slave to the suspense dice that is the d4. The timer is at 3? great lets hit the shop, the blacksmith, and the tavern on each round. At 0 the town guard appears and tells the players that the mayor seeks an audience with them immediately pushing the story forward. If that timer was a 1 instead of a 3 well then the players must decide what to prioritize with their 1 Round.
Not being able to do everything they wanted leads to more story in the long run. “crap i never did repair my sword, guess I better find something else asap.”
ICRPG changes how you play RPGs forever once you learn what it has to teach.