I've never used s.mk as a reversal to try and avoid lows. It's startup doesn't go over them, which would be one thing, but it doesn't. It'd actually be kinda funny if she was considered airborne for s.mk and s.hk and avoided grabs. Anyway, I sometimes use s.mk (and rarely s.hk) as a poke if I think they're going to c.lk me. I've never had outstanding success though.
Also, since I actually forgot about @IsaVulpes
' post until just now, I read through it all. Most of the mistakes are simply things that used to be true but aren't (Bella having the only launcher that pulled towards the user, Kanchou/Pummel Horse being hard), things that were thought to be true (US after PH was thought to be real for a while), or things I didn't know about and forgot to add (Horns into US).
As far as c.hp AA, that move has actually helped me out in the PW matchup, since it hits almost as far and wide as Excellebella but it doesn't leave me completely open if it misses, and I've also used it against Eliza and Val (basically, characters that stay up and away from me). s.mp and s.hp AA's, I didn't think were good at the time of writing and forgot to add them in. I actually still have a hard time really using s.hp in matches, but I know s.hp, runstop is a technique that I should learn.
About her having the easiest combos, j.lp, j.hp is the easiest link for me, and I use a pad. My theory is that it's from years of beam clashes with DBZ games, but I've never had any issues getting all my j.lps and the j.hp (I picked it up instantly, and honestly didn't understand it was a hard link until other people repeatedly had trouble). Anyway, I am currently making the video guide, so I'll save these edits for that.
But, actually, you're wrong on one of your points, about j.lp not connecting after MGR, c.lk, c.hp, and after c.mk. You have to dash after MGR (which I do all the time anyway(Edit: Actually, you don't even have to dash. probably character specific.)), and c.mk you have to just pause a moment.
And about getting grabbed out of Grab Bag:
Also, about command grab scaling (which has changed slightly since I wrote that, Excellebella used to be 35%): MGR/DDrop=55%, US/Excellebella=50%, PH=45%. And actually, it's almost never going to help you, but Grab Bag doesn't actually scale at all.