I have a suggestion: add support for dual-clip lanyards[1]. I've always found the single-clip lanyards annoying: they flop around and get twisted. I went to a conference this spring that had lanyards that clipped to both top corners of the badge, and it was significantly less annoying.
In the last few conferences with single-clip lanyards, I started noticing the badges' orientation. I would expect them to be roughly 50% front, 50% back, but significantly more badges were oriented so that the back was showing, which surprised me.
I guess it's the same kind of magic that makes the USB port always be the wrong orientation, then you flip it and it's wrong again, and it's only right after you flip it twice.
I usually keep my badge facing in (so you can't glance at my info) on purpose if the badge has a lead-gen attendee type - e.g. founder, investor, media - printed on it. I find that having it the right way 'round makes it harder to have interesting or productive discussions because by the end of the first day everyone is pre-judging the people they meet based on their badge.
If I'm there on a founder badge, for example, it's difficult to chat up investors because they're wary of hearing the 400th pitch from a random startup guy when I really just want to talk and make a connection.
This may be more annoying for me than most because I'm often at conferences as someone's guest, so the badge type rarely matches with my goals for attending.
I actually prefer the double clip style because I find it more comfortable, too! Just offering an anecdote that might help explain your observations - I can't be the only person who does this.
[1] For example: https://www.marcopromos.com/product/3-4-cotton-no-flip-lanya...