Embedded WPT not offered on specific GPX

I see the problem, that's really tricky. As a user, those files cannot be detected via a file system + text search, because the indicator is "2 or more <trk> exist"

Would it be possible for Locus to detect and then embed WP, only if single track gpx?

Or, easier, just embed all waypoints to every track? The user would still have the option to not embed at all.

Problem is, on importing bigger gpx collections, storing the waypoints disconnected from the track creates clutter and makes few sense.

Maybe GPSBabel plus some command line scripting will help. It has a "-merge" option. "This option merges all tracks into a single track with multiple segments."

I hope with multi segments Locus allows embedding.

It can quickly be done by the gpx editor program. (Free)

Why Locus does not offer this itself is possibly the following. Read Possibly !
The problem is that Locus uses a gpx navigation track mode with instructions in associated waypoints that need to be very tightly connected to the correct selected track.
By using a gpx navigation track mode with instructions in track points, the poi waypoints can be manipulated more freely.

Locus Map has always been handling multi-track files with some additional waypoints this way. What we can do is just inform you about the number of included tracks and waypoints but we aren't sure we should change the current system.