Outdoor, with a long rifle range.
--Able to shoot whatever you want, as long as you clean up the mess you created.
--Locked gate, so only keyholders can get in.
--Self policed, with video monitoring 'for verification'.
--anyone shooting the target stands (or any part of the range that isn't a target) instantly banned as well as prosecuted for vandalism/mischief/whatever. (unless you bring your own, obviously)
--All "cease fire" rules to be followed, by everyone.
Generally, the simple shooting etiquette that any/all responsible firearms owner would naturally want to live by, heed, and promote.
Them-there snapperheads whom decide to do otherwise, and leave the mess for others to clean up, or blast apart infrastructure so that nobody else can use it, or (most importantly) jeopardize the safety of others or themselves, should not only be removed, but PUNISHED as well.
The time for "living repercussion-less" has gone on far too long, and needs to end hugely. Responsibility and respect for others (& others belongings) needs to be in the forefront.
Otherwise, shoot what you brung, be considerate of others if you are using a muzzlebrake, and do what you can to promote the shooting sports. NASCAR and Tennis alike has rules and etiquette. We all begun to learn that in Grade 2, didn't we?
After that diatribe, downrange camera systems (for target viewing) as well as automated mover systems not to mention random and variable "pop-ups" can be massively employed for training as well as competition.
Barricade/positional shooting platforms and heights, as well as some "Top Shot" type infrastructure could turn the whole place into an amusement park of sorts.
Problem is, getting 'the people' to appreciate what it is, and what they've got is nearly impossible. Especially when you find cans and bottles laying around, not to mention computer towers and kindling that used to be backstops and building doors etc. Range buildings that have been broken into, doors.