I think it doesn't really matter whether you take posts, likes or mix of boths (likes in relation to posts), because from my experience you would end up with the same thing.
Just go to the "Notable Members" section and compare the "Most Messages" and "Most Likes" list and you'll see that they are basically the same with a few exceptions.
And with the exception of Chief Pavel (the few likes must be, because his posts must be from a time when there wasn't a "like"-feature, i guess) you won't find someone who only has a lot of posts, but very few likes. All of them have a post/like-ratio of ~50% or more.
Also if you spend just a bit of time on the forum you'll find out for yourself whos advise/opinion/insight etc. is valuable to you and whos not. At least that's the case for me.
EDIT: One thing I would change though, and this could just be my personal feeling, but "Esteemed on the Forum" is a higher rank than "Experienced and Respected on the Forum".
I don't know about you, but I would value "experienced and respected" as "better"/higher than "esteemed"
Just having the numbers of posts and likes below the name instead of the title would also be a good idea IMO.