It would depend on the game and how it was handled, but mostly no, I don't want it in a "WRPG". It would totally mess up the sense of immersion in a game like Mass Effect if all of a sudden you had some flash screen effect and you get magically teleported to some battle zone to fight the random geth that appeared.
Of course, that's one of the worst parts about the RPGs that do the turn based thing, is when the encounters are just random. I much prefer a style like Grandia where you can actually see baddies on the overworld along with your character, and you can try to avoid them if you don't want to fight. Ones where it just goes "ZOOM YOU BATTLE NOW" randomly over and over can get grating after a while. You generally need some spell or item if you want to avoid combat. Especially annoying in a game like Pokémon where you can always go back to old areas (and probably will) and you have to have a bag full of repel to keep the completely useless Pidgeys and Rattatas out of your way.
But bottom line... There's a time and a place for it, and it's usually in "JRPGs" where the game in general is more "You will do this how we say", whereas "WRPGs" are more along the lines of "Do what you want, that's why it's called role playing."
