It feels like you've never run Blades or any kind of a similar game...
corcaroli
I was both a player and a GM in a lot of FitD games, and its downtime is not just a D&D shopping session, it's another phase of the game covered by the rules.
D&D-like shopping sessions, in contrast, are just table talk.
A shopping trip can kill half a session if it’s been a while.
Do you really have fun running a session like that? Me and my players would die of boredom.
I can make one case for people like that: if it's a paid game. I can tolerate people like that because if I don't get their emotional investment in the game, at least I got paid. Not that I would invite them to play another session, of course, because there are a lot of better people out there.
Our Sorcerer knew Wish, but the player knew better than to try something like wishing to get to the lowest level of Hell, because on the meta level they wanted to play through this adventure, not to cheese.
The biggest challenge during Tier 4 is still resource attrition. Let them use their big spells, but don't let them rest. The best challenge you can give them at this point is to make a multi-session-spanning dungeon-like structure.
An example from my previous campaign: heroes needed to get to the lowest level of Hell, but they needed to transit through every one of them in process. Enemies were everywhere, and places for rest were virtually nonexisting. I think they had like 1 long rest in four months of play during T4, and it actually was hard for them.
Still, memes likes this one actually breed such GMs, because somehow they think it's funny.
Most people just want to do cool shit.
There are THOUSANDS of other games, and most of them let you do cool shit instead of tracking resources. Just, you know, stop playing D&D.
And again they are starting with 5e, ffs.