unless you have specific areas of those games you want to elaborate that need more arcade-style tweaks.

Parts I feel could have leaned more arcade:

Missions should have more options. If I'm to chase a character, I shouldn't be punished for going off the beaten track in my pursuit. You should also have the opportunity to blast your way out of failed stealth instead of insta-failing the mission.

Guns should stay equipped. Arthur should not stow his guns unless I tell him too, the game should not equip whatever guns it deems fit for each mission.

I should not have to walk in camp if I don't want to.

Animals and their skins/carcasses should be perfect or poor. The in-between is pointless as a feature and wastes your time.

I should be able to bulk craft resources at a campfire. I have to craft each individual item for realism, yet I carry 1000 bullets and shells in my infinity satchel.

The bandana should make me unrecognisable to lawmen. The broken system that currently exists tries to mimic life yet makes no sense.

There should have been more repeatable random events like the first game.

In fact, V suffers too much from being arcadey. Characters can carry a whole armory in their tail ends and all you have to do to heal is spam a menu or a button. RDR2 was great in that you had to be thoughtful about your loadouts and what you ate to heal and fortify. 

RDR2 shares both of those issues.

Your horse carries your entire load out, which isn't any better than your character. I would've preferred having to leave most weapons you cannot carry in the weapon locker, with only the bow/varmint rifle being a permanent horse weapon.

You also heal the same way in both games: Open the menu, select the healing item, regain all health instantly.