I'd be thrilled if the free throw % went up, and we'd all be excited if his outside shot got better too, but I'm not expecting either. It's not his strength. I'm sure he believes in hard work and will continue working hard to improve in both areas. He already hired Mark Price during one offseason and put tons of effort in. I'm sure he'll continue to work as hard as always.
But I think when it comes to shooting it's better not have expectations and add lots of pressure. It's not a perfect analogy, but it's a bit like saying, okay next month I'm going to sink a higher percentage of putts (not a golfer but assuming it doesn't work that way). You put the work in, you take the shots you should take and you hope for the best. No forcing.
As an aside, I do think not riding him for as many minutes could be good for his free throw%, especially later in the year. He busted his butt in three straight playoffs, two of them to the end of the finals....time for a year at reasonable minutes via really good backup PG.