Just had a PR for a notification reminder at startup. Some may want to leave the card in to set or adjust persistent settings, but a reminder is a good idea.
Discussion
At startup is good but in case someone, as you pointed out, wants to adjust persistent settings, having the reminder appear before any create new seed or scan new seed action would be preferable right?
Tricky UI issues because we have a unified scanning mechanism. Perhaps a one-time reminder before any scanning is done, or before any keygen routine is initiated. We'll have to think on the best way, but some kind of reminder mechanism makes sense.