I have always felt that most golfers want to see a tips yardage of over (or at least near) 7000 yards, even if they have no intention of playing them. For most, length connotes some form of quality. It's hard to quantify things like quirk and charm numerically and people like to make quick decisions. Oddly, the mentality of figuring a course from the tips means that often, golfers don't really stop to look at what the "real" (for them) playing yardages are, even if that would affect them most.
What is really interesting is that the par 72, 7000 yards "standard" might get skewed for courses that are par 71 or 70. I doubt many people mentally subtract the 100-125 yards per stroke of par on the card when making their decisions and a 7000 yard par 70 is actually a pretty hard, charmless course in many instances.
An example from my recent history is La Costa, a resort where somehow the forward tees were at a whopping 6000 yards and the back tees "only" at 7000! A lot of folks told them the course was a bit too short for them based on the 7000 (although "a lot" was probably just the vocal ones and may not reflect reality) It was a tough course for women at that length, and seniors were playing 6400, also tough. I trust that they will like it more now that back tees have eaked out 7150, but other tees have shortened to way more reasonable playing distances.
For example, one 19 handicap female golfer told me she was "thrilled" with the 4400 yards forward tees now because she could reach 9 of the holes in regulation (4 par 3's and 5 long holes). Apparently, for her, most red tees gave a chance to reach almost zero long holes. Honestly, at under 4000 yards (and near sea level, so maybe shorter) would be necessary for her to have a chance at 14-18 GIR. BTW, we have one par 4 listed at 178 yards so women can have the thrill of reaching a par 4 on a drive, with a really long drive (almost typed "a really big bust" but somehow that doesn't seem right.......) Seems like 4000 yards might be a barrier for them, although truthfully, at sea level, we might have shortened the course a bit more.
And, I don't see that changing as more folks get their course info from the net, although I would like it to. Pictures (signature holes) and stats are the first vetting point someone can get from a courses website, since they probably figure the comments are heavily edited or skewed towards the positive.
Of course, word of mouth from someone you know and trust to have similar tastes would probably always be the biggest mover in people deciding where to play somewhere new. Maybe supposedly independent reviews and the general buzz is also a big factor, regardless of stats. But, I think it will take a lot more general buzz about courses being too long before golfers change that long held mindset that yardage is important determinant of course quality.
BTW, most studies show that for local play, the biggest length statistic determining where you play is really miles from home to the first tee.....