Re: gasol for west
Does West only have PF eligibility? That's the only reason I'd say not to do this trade - with you only having five starters in your league, Pau's PF/C eligibility makes him more valuable in my eyes than West, especially since the numbers are almost identical.
Gasol will be an interesting guy once Bynum is back. With Kobe, Lamar, Pau and Bynum all looking for shots, there wont be enough to go around. I dont think Pau's numbers will take a huge hit, as he'll be able to dominate most opposing PFs (especially with Bynum running with him) but West would probably be a safer and more consistent play for the rest of the way.