Re: Josh Smith for Baron??
Do it. If your league is trade-friendly you will be able to move more players if the assist thing bugs you.
One more thing. Is this H2H? If so, then there is little to think about. You can punt assists every week and still win. You only have to dominate 5 cats in a 9-cat setup to win the league. You may not win pretty (hey who doesn't love those 8-1, 9-0 wins) but you'll win if you can absolutely dominate 5 cats and remain competitive in others. Indeed for H2H sometimes balance is the worst thing for a team. Better to stack up on 5 cats and punt a few in the process.