Hey Nunzio, another common sense, keep it simple, be resourceful sort of essay.
Your attention to how to cater to first timers got me thinking of other measures that could be subsidized by the so-called USGA 'warchest' for relatively peanuts sort of costs.
On course aids and instructional signage (i.e. where to direct cart and walking traffic around and on and off greens, time reminders on pace of play, and even a few rope lines where needed for directional control of course traffic. I took that issue up at my home municipal course when players were either getting lazy and careless or newbies didn't have a clue how to approach and park their carts near greens. As we all know, just poor habits cart parking can slow the game with players backtracking or driving unnecessarily close, causing damage to softer over watered surrounds, etc.
But, for newbies, even more support in the way of informational services. Here is where distance aid devices for the beginner are essential technology, it seems to me. Besides GPS on carts, have some spare hand held ones to offer a newbie with club rental or just return after rounds, cheap ones, course specific, or just at least hand them a good hole by hole distance booklet. Make it complimentary for first timers and encourage them to bring it back for use on return trips. Offer a good downloadable instruction video (Youtube or other) maybe 5 minutes of explaining the course and what to do and expect. They could watch one before they hit the first tee while they are waiting to tee off.
The club rental should be subsidized for newbies, with decent beginner forgiving equipment, light weight and good grips. Maybe offer a package of subsidized green fees and free club rentals for first x number of times playing the course, with a punch card sort of system.
I think many public muni or privately operated courses open to public have men's and ladie's clubs. Often time, there are older members, who love to walk for the exercise. Sometimes we old folk get an injury or pull something or can't actually play for various reasons, but would still like to walk for exercise. Offer regulars or members of these clubs or leagues who can't play, a free round or some other incentive to walk with a newbie to give them small suggestions, read putts, or just usher them how to navigate the course. Old folks like to talk, and opportunities to mentor a newbie who is serious about learning the game, would be a mutually beneficial thing for particularly retired folk and the newbies.
There are really no limits on creative, cost effective and participatory ways we could all grow the game, particularly with some small subsidies or incentives of the big alphabet non-profit organizations, that claim they want to grow the game.