Lamarcus would have been a rookie the year before they drafted Noah so I don't think it would have mattered. The blazers also had a healthy Brandon Roy in year 2 who was a superstar in his own right and drove a lot of that improvement.It's a fun game to play whatif's, but you have to wonder if they kept LaMarcus they are they too good to get the opportunity to draft Noah and Rose?
LaMarcus was a 17 & 8 guy by year 2. Portland went from 32-50 in his first year, 41-41 year 2 to 58-28 by his 3rd year.
Tyrus was a replacement level player.
The NBA gave the Bulls Rose so all they needed to do was be a part of the lottery.