Alright, I thought it was pretty neat. Got some pretty serious Exalted and WOD vibes (Mage vibes for the spheres and casting especially, I liked the magic system in part because of my nostalgia for Mage) in reading it. So I think it shares a lot of strengths, and perhaps also weaknesses, with those systems and settings. Whole essays and reviews have been written, YouTubed, etcetera, on that subject, I suppose. Looking into and pondering them will likely give you a fair bit of insight on your own stuff.
I tried to stick mostly to very basic edits regarding clarity and typos, etcetera, because I have rather limited expertise compared to some folks on this site and also that seemed to me more along the lines of what you were hoping for. I think I was some of the green anonymous posts. EDIT: NVM the colors seem to shift and change with every refresh, almost all old anonymous comments mine or others being purplish on the most recent cycle, and I can't even distinguish the colors of mine from the others. Commenting anonymously was perhaps a bad idea.
I think a lot of people who prefer OSR and OD&D and the like won't be quite as hot to trot on your system. But your system is your system, and it does what it does and is what it is. I'd say stick with its current design, but refine it, possibly by expanding and clarifying parts that need that and looking into variations on the Storytelling System to learn from each one's edges and pitfalls if you haven't already. Ultimately what matters is that it's the system and world you care about and want to play.
(Be aware, though, that with the level of discretion the Weaver of Narrative seems to be given even just as regards determining what gets rolled, how spheres are interpreted, what stat and skill levels mean, etcetera, there might be a bit of pressure on said person. And their skill level/the degree of trust and buy-in they can get from players will be important. Moreso, perhaps, than even for GMs elsewhere, in that the ruleset here seems less prescriptive and more GM interpreted.)
Others will probably have better and more specific commentary, or be more versed in the whole game design, development, and playtesting arenas.