Stelek, I think, pretty much nails the HQ section. You want psychic abilities in your armies. I do think he was too harsh on Tycho. His abilities to ignore armor and strike at Initiative 5 while having the 2+ 4++ saves are pretty much what you are looking for in a leader to give / accept Challenges. How many other marines can do this now? I think he's a nice addition in an army, as long as he fits in it properly and not just rammed in.
Captain Tycho (over costed)
Captains (better choices)
Astorath (over costed)
Dante (over costed)
Now, for the Elites slot. Stelek overlooked that Techmarines can repair hull points, so his estimation of the unit may change. He also skipped over Assault Terminators which we would assume goes in the yes category.
Assault Terminator Squad
Sanguinary Priest with Power Fist
Chaplain (depends on list)
Techmarine (until analyzed again)
Troops are overshadowed by allied troops.
Death Company Dreadnought (Blood Fists)
Attack bikes (I think Stelek is under rating them)
Bike Squad (I think Stelek is under rating them)
Vanguard Veterans (unreliable)