Hazards could be an area for potential technology. Not just ride-on bunker raking .... but moveable hazards. Crazy idea maybe? Pre-shaped bunkers and ponds in easy-assemble sections, even walls and hedges etc, built in factories, ordered on-line, delivered on a flatbed truck, unloaded by a crane forklift or rolled-off the truck and installed by the maintenance crew. Heck, such could even be moved to another location on the course if necessary. Indeed for a bit of variety or for a tournament they could be re-repositioned or even temporary ones trucked-in and installed.
There is an old cartoon of that, from one of the UK magazines +/- 100 years ago, when new equipment was starting to have a big impact on championship play. Unfortunately, they aren't paying Google to make it easy to search for it.