You do need shooters, but shooters are a dime a dozen and the skill is getting better and better across the board at every position. What is more valuable is getting two-way players, players who can shoot but that aren't a liability defensively.
Shooting can be expendable. It was for Roger Mason, it was for Gary Neal, and it can be for Patty.
If I'm the Spurs, I preserve the 11-15 mil going to Patty, and use it the following off-season. If I'm spending 10+ mil on a player, that player better be a two- way player.