With the new patch, you can combo into/out of trait in the corner pretty easily off air-to-airs/launchers/etc.:
e.g. f3, d2 xx trait, 112, 112, 112 xx db1 (42%)
Also, you can get trait mid-screen with the following at a ~15% damage loss:
dbf1 MB, (walk forward slightly), d2 xx trait, d3 (15%) [might be possible to replace d3 with other moves, but the timing is tight, damage is low, and oki is worse]
f3, walk forward slightly, d2 xx trait, d3 (18%) [possible to replace d3 with f+1 or dbf+1 (possibly other moves as well), but same faults as above]
b3, dash, d2 xx trait, d3 (18%) [the d3 can be replaced with longer combos off 1 xx db1 MB and the like, but the d2 scales heavily, so the potential damage for the combo is probably higher without trait and you get less time with trait for follow-up pressure/combos if you don't d3)
Still looking for more ways to combo into/out of trait. The above mid-screen ones don't seem worth it to me, but I figured I'd post them anyway hoping for further development.