I seldom comment these days because it is too much effort. Getting past auto moderation or sites which use Disqus and force registration with the site itself or secondary services and some still expect me to deal with CAPTCHAs too.

It's much simpler to bypass all that and send them a comment via Twitter.

I don't recommend adding more hoops to jump through to commenting. I won't register for any sites. Mostly because as soon as you register you are stuck on email lists which send more clutter to the email account I get almost no use out of any longer.

Commenting itself needs to change, not just how WordPress formats it. I'd turn comments off entirely and leave a link to my Twitter account. One percent of my comments are legitimate the rest are from my Mother, people asking for free ads on my sites, or comment spammers.