The sidequests are called so because they're optional. Not to mention, if you're doing them all like I am you'd quickly overlevel. Regarding voice acting, Arc Rise Fantasia made me mute it whenever someone spoke.
>Nintendo doing DLC for new Mario game
I wasn't really giving a toss about next gen, but now I really dont give a toss
^ ... What the ****? Where does this information come from? And DLC as in PAID DLC?
Point being, if you enjoy simply playing through the game's main missions, you'll enjoy most or all of the optional content.