Since all of the uses connected under the sink are low-volume, then the use of Tees or dual outlet valves poses no problems. So far, I have not seen a ball-valve type dual valve, so this is one vote for putting in multiple valves. I would probably do this if replumbing my kitchen from scratch. I would put approriate tees inside the wall, and provide 4 separate sturdy stuboout, and use the brasscraft 1/4 turn ball valves. I would stub them a reasonable distance apart to allow for installation/maintenance.
This may be overkill, and may lead to a bigger tangle of supply lines under the sink. All in all, it is not an issue to lose a lot of sleep over.