I feel there are 2 types of fly tyers: Those who enjoy tying and showing their skills and not be bothered with trying to explain how the pattern was tied and then there are those, like me, who not only enjoys tying but also enjoys helping new tyers and seeing their results.
I think I get where you’re coming from with that, but, in my humble opinion, that’s a bit polarizing. With this delineation comes the unspoken inference that anyone who just wants to post a picture is somehow anti-beginner. I think that rather than this being classified by the individual person, it should rather be classified by situation.
For example: If someone started a thread asking for everyone’s favorite flies for small stream brookies, you’d have various people referring to classic patterns, modern take-offs, and a few posting their own creations. In my own opinion, I could do this kind of fishing with no other flies than a box of #14 yellow stimulators. I might just want to post a picture of the fly and be done with it, and not want to catch flack from someone or have people make snide implications about me hating on beginners. At the same time, I might then jump over to a thread about slip-winged wet flies for trout, and post a picture of an Ibis & White. While I may or may not want my fly to be critiqued, I don’t really think it’s necessary to post a recipe or a step-by-step either.
As far as a reorganization of the forum itself, I’m not sure that a Beginners/Experienced Tyers split is one that would benefit either party. Instead, I’d suggest one of two things: two added subsections to the tying forum, one called “Share your Ties” and one called “Critique”. In the SYF section, you could feel free to post a pic of your fly with a recipe, step by step, history, or nothing at all, just the pic. You could specifically mention that you are or are not looking for suggestions and feedback, or if you are simply posting because you liked the fly and wanted to post it so that it might inspire someone else. The feedback and format here would be far less structured than the other section: critique. In the critique section, you’d post your fly, and a recipe would likely be a prerequisite of asking for a critique. You’d post your fly’s picture, the recipe, and a brief piece of text explaining what aspects of the fly you’re specifically asking to be critiqued (hows my dubbing? Did I set these wings properly? Will this homemade creation float in the film?), and the replies would/should be well formed, non-condescending commentary.
The other option, similar to this, would simply be to not restructure the site, but rather have thread starters ‘tag’ their thread title with an appropriate designator. For example: “[Critique] Lime Trude: How’s this Wing?” or “[Share] Pictures of my Latest Hair Wing Steelhead Streamers” This option wouldn’t be as drastic of a change and might get lost in the shuffle, but it’d be far easier to implement early on, possibly to see how the creation of the subsections might clear things up.