Is this a middle vault collapse? What is the treatment? I year post-op. (photos)

You are right about your judgements, your nose shows several issues, some correctly pointed out, and the solution is not AT ALL the one proposed.
Here is my list of detected issues and solutions:
-open roof deformity: your bones and dorsum are broad, this needs proper parasagital bone release or resection pluse well performed osteotomies to render a thin and defined dorsum
-pinched middle vault with double collapse: the double collapse means inverted V deformity due to anterior collapse of the lateral cartilages.... but such "V" is non-visible because there is a profile collapse and a sunken dorsum (did you get any septal work as well? seems so) with a short saddle nose deformity at the supratip; this has complex solution: the pincheed vault is treated with spacer grafts, and the sunken supratip with onlay grafting, which might require additional temporalis fascia graft to camouflage its visibility
-seems a portion of the right upper lateral cartilage is missing or folded in or similar... odd issue... needs intraop assessment and repair
-remnant hump: needs shaving
-poor or no tip work with apparent poor support: this may need columellar structs, plasties, plications and grafing of the tip; to be assessed intraop
You need a surgeon with vast experience in revisions, do research well and seek better opinions.
Better images are required to provide overal assessment of your nose.
Feel free to request any additional information from me.

Revision rhinoplasty for nasal dorsum depression and lateral mid collapse , etc. is corrected by adding cartilage and soft tissue grafts to fill in these. The hump may or may not need reducing but I need to see if this is too high as well. See a very experienced revision rhinoplasty surgeon to correct this.

Click on the "Web reference" link, just below my response, or go here:
FacialSurgery.com/RealSelf/RealSelf_kari2610.html
I made a computer morph of your nose, and an animation of the morph, to show the changes that are possible for your nose in truly expert hands.You've been asking about a middle vault collapse for a while. There might be a tiny amount of that, but it's only a small part of what's going on. When that right three-quarters view that you posted looks like a big bump where the bone is, and a bump where the tip is, and a depression in between those bumps, then yes, that depression might be a tiny "collapse," but really, we see the depression there because the boney part of the nose is too prominent, making the bump above the dent, and the tip is too prominent, making the bump below the dent. If the bone and the tip were less prominent, we probably wouldn't see the dent at all!In the morph, I simulated narrowing the boney part of the nose, and narrowing *and elevating* the tip. I'd like to see your tip up a bunch.
You should understand that the changes I demonstrated in the morph require advanced techniques, techniques that most plastic surgeons cannot handle.  Be sure to read the section in the "Web reference" link on how to stay out of trouble while searching for a rhinoplasty surgeon, and how to tell whether your primary surgeon should be performing your revision. You should only have surgery if you are able to make yourself very confident in your surgeon's skills.
I'd love to hear what you think of the morph. Did it seem to address your main concerns?
Your nose is also a good example of why computer imaging is mandatory in rhinoplasty. You need to know exactly what the surgeon is planning to accomplish -- what features he thinks he can change, and by how much he thinks he can change them. When you see his goals, you'll know whether he has an eye for a beautiful nose, and whether he shares your opinion of what constitutes a beautiful nose. You'll also know whether the changes he proposes are enough to be meaningful to you, and whether he understands your wishes enough to address all of your priorities. But remember, you're not hiring him for his skills with the computer. The doctor must then show you his before and after photos to prove that he can actually accomplish what he draws on the computer.
In your case in particular, you need to find a surgeon who understands all of the issues I mentioned, and how they fit together, and who can actually accomplish them in surgery. You don't want to be looking for yet another revision later.