I don't have a problem with any of the guys you've listed but honestly that looks like the weakest mid card during my enitre time as a fan, and that includes today. Here's a long list of just some mid card talent from different eras.
That list actually looks like a really weak mid card to me. Go all the way back to the mid 80s.
Ricky Steamboat
Don Muraco
Tito Santana
Greg Valentine
Cowboy Bob Orton
Junk Yard Dog
Randy Savage
What about the late 80s into the early 90s?
Ted Dibiase
Rick Rude
Jake Roberts
Brutus Beefcake
Mr. Perfect
Rick Martel
Jim Duggan
Dusty Rhodes
Mid to late 90s
Shawn Michaels
Razor Ramon
Owen Hart
Davey Boy Smith
Jeff Jarrett
Goldust
123 Kid
Goldust
Faarooq
Mankind
Steve Austin
Triple H
The Rock
Early to mid 2000s
Chris Jericho
Chris Benoit
Eddie Guerrero
Edge
Rey Mysterio
Rob Van Dam
John Cena
Today
Wade Barrett
Dolph Ziggler
Alberto Del Rio
Kofi Kingston
Cody Rhodes
Daniel Bryan
Miz
This is HITTING THE NAIL RIGHT ON THE HEAD!
Almost all the guys you listed are decent but BY FAR the weakest midcard division in possibly wrestling history i'd say, & DEFINATELY in the era's stated above. In the 80's, 90's, Early 2000's & (besides Punk)Present Day, my favorites are pretty much all the midcarders. In the era you mentioned, the mid 2000's, the midcard was pretty weak & that is when WWE started putting almost all their time into the Main Events.
Carlito: One of the better out of this group, Carlito got really stale really fast & while he had good technical skills, Carlito was nothing special as a heel & a MUCH worse babyface. I'd prefer him over Epico, but he reached his peak when he debuted.
Shelton Benjamin: The 2nd best out of this entire group, Benjamin's problems were clearly his mic work & gimmick. Like Morrison or someone like that, he was just a much better athlete than actor or speaker. He was GREAT with Angle & Haas, but after rolling with the gimmick of getting some quick victories when he went to RAW & wrestling the likes of HHH & HBK, he hit his ceiling.
Ken Kennedy: Not the worst but not good by any means. I rewatched a match with Kennedy & I forgot just how bad & green he was. He fooled everyone because he is a good speaker. I'm glad Orton got him fired, he would have probably ended up hurting someone.
MVP: The WORST out of this list. Why anyone like him I will never know. He wasn't an entertaining or good heel & he was a AWFUL face. I hope to never hear "Ballin'" in the WWE AGAAIN!
Matt Hardy: Solid performer but he obviously got REALLY beat up with all those Ladder, TLC, etc. matches. Matt looked like a modern day Iron Shiek trying to wrestle by the time he left WWE. It was kind of just sad how slow & stiff he got in the ring.
Booker T: Probably the most successful at the time & as an overall career. The Book man never did much for me but I enjoyed some of his matches. I'm just happy he is off commentary! At first it was funny, then it was annoying, & eventually it just got to the point where he was ruining PPV matches.
Finlay: I'm happy he is back as a trainer. He has a great mind for the buisness. Never was huge on him as a performer in WWE but he is an asset.
William Regal: My personal favorite on this list. Compared to who has been world champion these days, Regal should have been ATLEAST a one time Worlds Heavyweight Champion. He was a PHENOMINAL heel in & out of the ring & has ALWAYS remained enteratining. I'm glad he is still around & performing.