My thoughts on your list....
Things that (YBGuy) thinks generate the most views in a motovlog:
-Expressive energetic personality, good speaking voice (Yes)
-Humor (Yes)
-crashes (If you catch one, sadly Yes, you will get offers from compilation re-posters for these)
-Interaction with people (Yes)
-reviews (Definitely Yes)
-repairs/fixup/how-to (Maybe)
-Exotic locations (Maybe, with good keywords)
-Attractiveness on camera (Nah)
-Crazy driving/speeding (Sadly, yes, but I try not to post these)
-Stunts, high skill technical riding (Maybe, but risky)
Here are a couple more:
-Unboxings of popular items (Yes)
-Collaborations with other Vloggers and even non Vloggers