FrogReaver
The most respectful and polite poster ever
I play 5e in a campaign that is run by the book by a kind DM with WOTC modules/adventure paths. And yes, I think it is somewhat easy. However, my group's capacity to do sub optimal things means that a TPK is always a just a cascading series of bad decisions away.
By biggest issue with 5e is not actually making PC more powerful, or making the game tougher but just making things more unpredictable, by adding a few more decisions and wrinkles to combat. I do think the 5e I have experienced is a touch too predictable. Aside from dialing up the threats, if I were every to DM I think I would like to tweak a few things because I do like more tactical depth than what I have seen in vanilla 5e. Most importantly I would like to see more in combat options for the martial classes but this would need to be balanced by giving the monsters a few more toys and surprises.
I find I'm happy with the amount of tactical options rogues get. Maybe you are just playing the wrong class

A wizard should have a pretty tactical feel to it as well (or at least you can make one to be that way).