Jahydin
Hero
Understandable, and you're not wrong. 5E feels like D&D to me at Levels 1-3. Then its "Avengers Assemble".In my case "Monty Haul" isn't just gold and magic items. It's getting any kind of reward for minimal effort. This can be XP, Levels, Titles, Story Developments, or - heck - even the reward of playing the game itself. Most of the time my players can pass through on auto-pilot, halfway paying attention to the plot, combats, etc. They're still rewarded with the game continuing on as if they had played masterfully, using every resource, been thoroughly engaged, etc.
The important question is: are your players having fun? That's why I still play D&D. All of the positives you mention (tactical combat, resource management, demanding full engagement) are not positives for everyone. In fact, probably not most people.
If they're not having fun, then oh man, we can talk new systems all day. I'm certain there's something better out there for you! I mean, you really want to test your players, there is this game called Hackmaster...