I think your characterizations are fair, for the most part. I do not think Jordan Willis's pass rush skills are lacking, though-- he has terrific production and his hand use is exceptional.
I see it this way:
Charles Harris: I feel a little less down on him than I was before his pro day-- but the combine test results are a bit concerning. Was he tired? Injured? Bad at learning the skill tests? Unmotivated? I think he's best suited as a 4-3 Off Ball LB who blitzes (sorta like Vic Beasley after taxes). That way, he can use his coverage skills more, and he can rush the QB without banging on an OT all day.
Carl Lawson: I think Lawson would probably work in PIT, but if my job is on the line, I'm labeling him as a future 4-3 DE-- and probably a very good one, if he can stay healthy.
T.J. Watt: I'm not opposed to the idea, but I recognize that he's a BIG project. he has tools, but little idea of what to do with them. Like the Steelers reportedly do, I think 1.30 is early for him.
Takkarist McKinley: I don't think he's athletic at all. He also seems almost irrevocably unsmart. He has problems whenever engaged by a blocker and his athletic testing was incredibly bad. He's the leader in the clubhouse for "probable biggest bust in the draft".
Dawuane Smoot: No earlier than day 3. JAG
Tim Williams: Too much baggage, too old, not enough athleticism to be a good risk as a top 100 pick
Derek Rivers: I like it-- definitely needs work but he combines traits, athletic profile, and hustle. It appears on tape that he got a bit stuck when his initial move failed or when he got tired. There's a lot of film of him latched on to OTs while the QB or run went elsewhere. I think it's postseason everyone-looking-for-a-sleeper that has inflated his price tag beyond his actual value. He would be a good 2nd round pick, at or around TJ Watt and before Biegel.
Haason Reddick: It's a brand new world in the NFL, so it wouldn't surprise me if the 3-4 ROLBs of the future look more like Reddick than DeMarcus Ware. I think he *could* work in Pittsburgh, but it would require a re-write of the defense. Once again, a guy who is suited better to be a blitzer vs an edge rusher.
Jordan Willis: He's the best all-around 3-4 capable edge in this draft and arguably the most ready to play of all the top guys. His freakish first step is going to win a lot of battles-- working on his counter move will cement him as a starter. He played in an extremely disciplined defensive system, so shows great ability and smarts vs the run and in contain. If you doubt his pass rush skills, watch him on 3rd downs and in the entire WVU game or Senior Bowl game. He just blows by tackles and shows bend and tools with his hands. On top of that, he's a freak of nature in terms of tape study ethic. Says he watches 4-6 hours of film per day. Even if that's really 2-3 hours, that's ridiculous. He's also young and reportedly extremely smart. Not everyone agrees with my assessment, but I've seen him in 1st round last two weeks in 3 reputable mocks... two of which were before 1.30 and the other he was picked for the Steelers.
Tyus Bowser: A year or so in the James Harrison weightlifting program, he will have more lower body strength-- but, in the meantime, he is the best coverage edge player in the draft and he has shown a lot of ability rushing the passer and diagnosing/attacking run plays. He would immediately be your package LB/S hybrid in dime and can provide relief at the Edge, with little risk. He's also underaged and will only get better physically.
Ryan Anderson: Good college player who isn't special enough in any one area to succeed in NFL. Not a top 100 player.
Tarell Basham: Nice rotational guy to take a chance on... day 3.
Too early but I like them...
Vince Biegel: Maybe not the upside of Watt but well-coached and enough athleticism to take a shot. Late Day 2.
Pita Taumoepenu: THE premier speed rusher in the draft, bar none. He doesn't have enough base to be an early every down player vs the run, but as a stunt rusher-- coming in in passing situations-- he has the chance to be elite. He could have 10 sacks/yr, playing on in passing situations. Overwhelms OTs with steps 2-3, and does it over and over with seemingly endless energy reserves to the point where they get flustered and embarrassed. He probably goes Rd 5 or 6, but I'd have no problem drafting him as a double dip from comp pick rd 3 onwards.
I have them in this order:
1. Jordan Willis
2. Tyus Bowser
Whatever it takes.