Hell yes! Killin' shit needs to be fun.
I think that even without the dungeons - if someone just wanted to roam around the world, it should be fun on its own. Almost like how people are able to enjoy GTA just roaming the city, even when avoiding the story.
Anyway, a great combat system will allow this - accessibility! It also jacks up replay value, on top of being more fun to play overall. I've played the original Legend of Zelda tons of times, because I enjoy the combat.
Do it, Nintendo!