I find 83% (front and side) the magical number for forests, it’s what is necessary for true 3D reconstruction which makes it easier to map low height flights over complicated canopy tops.
That said, you can turn up the knobs on matcher-neighbors (make it 20 or more) and turn up the knobs on min-num-features to something like 32000 or 64000. You can also try setting feature-type to orb. I haven’t had luck with this yet, but I know others have, and if it works it will speed up your processing.
(I don’t know if there’s a cap on lightning for min-num-features, but if there is, set to to the cap instead of the above)
I am fairly certain that when I was regularly using Mission Planner, you could specify whether the camera’s longer axis was rotated inline or at 90 degrees from the flight line, and the flight plan and spacing would change based on that parameter. Mission Planner gave you a full IFOV calculation with number of overlap estimates as well. The IFOV calculations definitely took into account height and width ratios.
Anyway, we’ve hijacked this thread… . Sorry @JedW. Check out the advice above for either tweaking parameters or reflight overlap recommendation.