If I'm understanding correctly, it is a regular pool, just with a non-custom fit, really thick pond style liner. You plan to sanitize/chlorinate with a SWCG and use a filter designed for a pool so you shouldn't get any objections there. It's more just about going a little outside of the box on appearance. You'll have wrinkles in the liner which will collect dirt and inhibit circulation in those confined areas which could lead to some algae growth, but probably not too big of a deal. You may just need to to keep your FC higher on the FC/CYA ratio scale to account for that. Although from the postings on here, we don't hear much about dogs ripping vinyl liners, it certainly would seem like it could be an issue. Honestly, we were never going vinyl, but knowing that we had a dog that might want to swim (and now have two young doggy swimmers) that thought was in my mind. My dogs did recently "learn" how to swim and during those first days were a little frantic and left scratch marks on some of the plaster steps. So I'm on your side for wanting a doggie-proof solution.
Most likely the most controversial part of your build (appearance aside - which is subjective) is putting plants, even on raised platforms, within the boundary of the pool. Just from a contamination/chlorine usage perspective. But if you don't care to hear people's feedback on that piece (or anything else controversial) just say so and people will respect that (and if not there are ways for the Mods to make them respect that).
I'd suggest that you just be clear on this thread that you let people know what you are open to hearing opinions on and what you aren't. My comments above are hopefully somewhat helpful and not too off base. I think you've done a good job of letting people know this isn't a "standard" pool installation and to tread lightly on commentary contrary to that.
I look forward to watching and am glad that you've come back!