Not "dumb down", but make it more like the game it is made as - D&D 5e.
None of those effects are present in the tabletop game, and while it may be more interesting to have them, actually having them is turning the game into something else.
Also, many of these effects severely break the balance of 5e, further changing not just the options available, but the very playstyle of what makes 5e into what it is.
