(3) I think Darko's best playing weight is around 240-245lbs and he is currently up around 275lbs or something like that.
I've seen you, or someone else perhaps (I can't remember everyone on this board) mention this weight, and I just don't know where you're coming from with it. KG is listed at 253 pounds. Darko is an inch taller, and has, at least visually to me, a bigger frame. I just don't see where this 240-245 ideal range is coming from. He's a big dude.
That was the best weight I've seen Darko at. Where he is capable of playing his best basketball. That is why I consider it his ideal weight.
Darko Milicic was a very athletic 6-11/7-0 center. He had excellent mobility and speed. Very good explosiveness. Leaping ability, multiple jumps / effort plays. That was when he was at that 240-245lb range.
As he has continued to pile on the pounds, Darko has lost athleticism in each of those areas for the added strength that he has gained. Unfortunately, while that added strength has added to his game in certain areas (like post defense), the losses elsewhere have robbed him of so much more. It's a net loss for him. A large one.
I don't understand why anyone would want a center with high level athleticism to throw that all away so that he can move around the court like Eric Dampier.
Greg Oden did the same thing. Physically, Oden was like a 7 foot Amare Stoudemire when he was college and weighed around 250lbs but then he came into the NBA and decided he needed more muscle so he went up to 280lbs in the NBA (and 300+lbs for awhile) ... yeah, it gained him extra strength but he lost so much more elsewhere (plus, probably increased his risk to injury too).
Basketball is a game of relative (to position / skill-set) quickness and mobility. If a player can add weight without hurting himself too much in those areas, then he should do it. If he can't, then he shouldn't.