The thing is that unsolicited wants and suggestions posts are at best largely useless (items are planned a year or more in advance and there’s a fast turnover of designs), and at worst they will provoke some kind of discontent by pointing out flaws or what-might-have-beens.
If you give them energy by anything other than a bland form response, you’ll be deluged with one set of people wanting all kinds of highly personal items and enhancements, one set who want old stuff brought back, and another set of people who want to rally complaints about their pet peeve.
You can't make everyone happy and someone's requested tribute to their much loved departed grandmother isn't going to be satisfied, and that person may then lose a degree of positivity.
Before long, you've lost the focus on the item advertised in the new post. You really don’t want to encourage an outpouring of this on every post. You need to n.i.p it in the bud or not give it oxygen. This is a main reason why so many retailers don't allow comments at all.
Some of these suggestions may be useful but they are not reliable as market research. For example, I’ve noticed that people always post about wanting crosses on their jewelry but guess what always ends up on clearance? People as a group say one thing and buy another.
Scott, like other retailers, has asked for suggestions on multiple occasions and this is exactly what happens each time but it’s contained within one managed post.
(Edited for auto word filtering!)