track length is directly related to personal pref, aka riding style...there will always be pros n cons.
but, with proper suspension setup and STRAIGHT rails, shorter tracks can work (for controlling the skili factor). but obviously, the more boost/power you add the more it will be an issue.
i still wish i could at least economically 'try' a shorter (156") track from time to time.
but in the DEEEEEP days, the 162x16x2.5 is great..other days, its not.
for crawl style boondocking, the more track surface area (and less weight) will obviously help.
and the steeper and deeper it gets, longer is better..
but you still can't convince me that manuaverability (or carvability) isn't decreased with longer (and wider) tracks..
THUS, most of track length / width decisions and discussion continue to be personal choice.