Compared to the 80's and 90's, there is a smaller focus on gimmicks. Hogan would shout in his promos, Savage had the "Oooh Yeeeaahh" vibe, Warrior would sound like a caveman and Ramon was all "hey chico!" Stars from both generations also had a unique look that represented their characters.
What do you think is the reason for the less focus on characters? One reason I could pick up was because it gives the roster a chance to cut a variety of promos. You wouldn't expect one of the guys I mentioned to cut the kind of promos The Rock and John Cena were before their match. Is that why they've become less focused on characters? Even in the mid-card, you had Duke the Dumpster, Gobbeldy Gooker and Abe Schwartz.