If anyone needs a shot-clock of sorts it's the broadcasters. CBS did a slightly better job than the norm by cutting away from slower players to show action on other parts of the course, then returning when the poke was finally ready to play.
Everyone knows who the dawdlers are. If TV was proactive, and never stayed on any player who was dithering around during his/her routine, it would create the illusion that all the players were moving around the course at a good pace.
The viewers at home would 'see' more action and quicker play, which is an immediate positive, and that combined with better enforcement of the existing rules pertaining to slow play would eventually get the times down on Tour. It wouldn't even change the time slotted for viewing, events could still end when scheduled just by moving the starting times for all players ahead.
Frank Chirkinian was a master at this for CBS, better than Lance Barrow, his successor, and he had to be in the days before each camera was hooked to a DVR. Chirkinian would hop from shot to shot, sometimes using a split-screen, and it had the effect of making the most static of sports active.
Chirkinian could hang a player out to dry, too. Remember Bill Britton? Britton was a snail, and Chrikinian teed him up one day on the 13th tee of Butler National at the Western Open. It's a par 3 with water left and behind. Britton got to the tee and took a look. Chirkinian proceeded to roll a crawl of every Western Open winner from 1899. He ran it all the way through – about 80 names – and Britton was still mulling his shot.
Kalen, love the shot clocks. Augusta could put them up next to the group score boards, the "Thru 5" boards that dot the course. Green, of course!