The hitboxes on that surprised me. I hadn't seen it until now since it's buried way the hell down on the frameviewer's list. I'll have to play around with it next chance I get; seems like it might make a few certain match ups a lot easier to handle.
Throwing this out in advance; most of my views are probably heavily influenced by the fact that the bulk of my experience is against Ciel, Sion, V.Akiha, V.Sion, Ryougi, and Hisui, with some Nanaya on the side; characters that, in my experience, don't have a lot of trouble dealing with most of F-Akiha's options at neutral, so it might've skewed my views a bit.
I find the mid screen/neutral game to vary a lot depending on who you're up against. VS anyone with even one proper zoning tool, you don't want to be setting pits or anything else unless they're standing on top of a 22x summon point since F-Akiha can't really play a fireball war; 214B is as good as it gets, and it's pretty terrible for that once you're more than a few character spaces apart.
Trying to control space too much is also problematic with faster characters because of how much delay there is on setting a lot of things out; add in the stages being as big as they are and character mobility, and it's really not that hard to get around her specials and score hits or start pressure if she tries to zone too much. Knots are good, but the animation + time it takes for them to go active makes them a bit dangerous to use in a neutral situation.
22A to stuff/trade with aerial approaches is good, but you have to be careful with characters that have straight air dashes since some heights make it hard to gauge whether a fresh/barely charged 22A will catch them, or if they'll be able to sail over it.
jA and jB should probably get some mention at neutral since they're very solid air-to-air tools. Not as godlike as H-Ryougi's jB/C, but good enough to make air-to-air a viable option against most characters.
You'll also want a section on her corner game since that's where she's strongest. Having a separate thread for this might also be a good idea. I've been considering it for a while, but it hasn't seemed like there's a whole lot of demand for it, seeing how you and Psylocke are the only other F-Akiha players I've seen this side of the Pacific, and Psylocke doesn't seem to play much anymore.