he wasn't spectacular or dynamic, but he was outstanding in his role as secondary scorer, ace defender, 3&D, and glue-guy. Those are all integral roles on a contender
then he went to Brooklyn and thrived as the #1 option. To be sure, the sample size of his Brooklyn surge is incredibly small vs the rest of his career (31 games vs 400 games), but it is impressive that he has been very successful is several different roles. And, he's also that very valuable and somewhat rare 2-way player (at least it's rare in Portland).
all that said, he's not worth more than #3 + Simons. But he's the only 'target' among him, Siakam, Brown, Ingram that I think is worth that price. The rest of them have too many negative factors attached and there would need to be something else coming back to Portland. The Blazers wouldn't be trading a 7-10th pick; they'd be trading a top-3 pick in what apparently is a 3 person draft. Pay up if you want it because, contrary to all the reporting, I think Portland is more than fine with keeping that pick