Showing the very first visit would be possible, but I won't change it that way, as it would make the visitor profile inconsistent. All data would be calculated based in the last 100 visits. Why should the first visit should show something different. But I will add a small text in the beginning of the summary showing a notice that the profile shows only X of Y visits (if there are more visits than defined in config)

Matt, thanks for creating the issue ticket.

To put a screenshot to it, the info on the left (First Visit) is my primary concern. Since First Visit is not actually the FIRST, but the 10th most recent. For this user, their true First Visit was March 8, 2017, not November 22, 2017.

The info on the right (showing Visit 100, rather than some number greater than 100), while not entirely correct, isn't my concern here.

All data would be calculated based in the last 100 visits. Why should the first visit should show something different.

@sgiehl in that case we want to implement a "First" visit reporting, as in, showing the very first visit. This is because how user found the website in the first place is very valuable info, and often there is only a single channel used during 100+ visits. The first visit is where the only referrer may be found... Also, knowing the time of the first visit is interesting and the info only found in this visit.
so ideally we still write "First visit" and load the very first visit summary there.

edit: reported by customer too

This great little improvement has been made! 🎉