The problem with any action based game that is designed around button mashing is it gets boring pretty fast. So the main things you need to do to counter that is
1) to give more options and breadth to the characters in the combat so that it doesn't feel like you are doing the same thing again and again, e.g Witcher 3. Strip Witcher 3 from it's 5 signs and styles and you get a simple button masher. Adding the signs and styles give more options thus makes encounters feel unique.
2) Make the encounters themselves unique. This is more important. If there are a bunch of random enemies that all get taken down by the same style and the same sign it falls back to being boring. Need specific encounters designed keeping in mind the breadth of the combat.
3) If the game is party based, there must be interactions amongst the party members during combat. Simply switching to other characters than doing their skillset, then switching to the other gets boring. Need stuff like "combo arts/acts". This just an extension of the first tho xD But i feel this necessary,
Haven't played the game so can't comment with absolute certainty on any of the points but as far as I could gather from the videos, I don't think FF7R has any thing like combo acts? They could implement something like setups to make the combo acts more interesting like you need to stun/stagger the enemy first and blah blah.
Secondly the basic combat (basic attacks/solo combos) feels pretty similar to dragon's dogma. But I felt DD's system more pleasing and satisfying.
Thirdly The game does seem to have a basic weakness system but I think that's it. They could've made it more interesting like, for heavy armored enemies Tifa's knuckles are more effective than cloud's slashes OR You need to first use Fire then smash with knuckles and then slashes on heavy armored enemies to break their armor and stuff like that.
And lastly the damage numbers and the cross hair is hideous
The combat effects are pretty much teh same on every enemy. On mechanized enemies embers make sense but why on organic ones? Haven't seen blood in any videos as well. Cloud swings swords like a toy. In DD when your sword connects there is a small knockback effect on the camera making it feel like you actually hit something.
P.S:- most of my remarks might be wrong as I haven't played it. CT, confirm these for me please xD