Rather than filling in more trait lines (which reduces diversity)…
I would be nice to have longer trait lines to enable to use more skills on a same line, that would increase diversity and enable to make builds that suit each person’s style.
Adding some trait point for a possible over 80 content added later later on would therefor be very nice IF the trait lines are made longer opening more options to specialize or to spread as one feels appropriate.
There would be no need for a complicated add of new skills, just make it possible to use more of the existing at the same time.