The 4 is a very interesting position. The presumptive starter, Roberson, started to flash towards the end of last season and had some big games for us. At other times he would struggle. His jump shot might have regressed from his first year when he could at least hit the mid-range shot. Last year, with more minutes (and pressure), his confidence (in his shot) tanked and his points came almost exclusively from put backs or rebound layups. These were available against smaller teams but against bigger teams were harder to come by. Taller front line players would push him out of the lane easily and he would struggle without a reliable jump shot.
I think we all agree that the sky's the limit for Roberson athletically (in that sense, he reminds me of Wes Johnson). The problem is .. at his size, he needs a jump shot to be a significant force on offense. It's pretty clear that confidence is the main thing holding him back .. (I can't detect any major problems with his release). But whatever it is, he's very tentative with his shot. Defenses figured this out and turned him into a liability on offense, enabling them to play off him and double Rak. This could again be a problem with DC2.
However, if Lydon becomes servicable, at 6'9 against bigger teams he is a better fit at the 4 on D, and could stretch opposing defenses with his outside game - as you point out. Therefore, if Roberson's shot doesn't show up, and Lydon gets up to speed, I'd prefer a combo of G/Roberson at the 3 and Lydon at the 4. That would put more size inside and give Roberson room to slash and rebound at the second level where he can be successful.
Roberson will start at the 4 and then we'll see what happens with Lydon.
