For me, the interest of playing in (and most likely running) the Feywild is based around difference. It's different than the bog standard material world stuff.
After a few sessions of fey races, weird, magical, and unpredictable spaces, it will start to feel as familiar as the material, just with a different label - especially if your PCs never go back to the material. You need reference points and comparison.
I like the mention of having more normal phbish races as to have it feel foreign to them.
Perhaps you can do 50/50, with Feywild "pockets", appearing at random places throughout your material plane (in whatever world). An entire session or 3 can be spent in that pocket but the overall coat is material plane stuff. The excitement of gameplay comes about when the group reaches into pockets finding lint AND a fey-touched Mind Flayer.
After a few sessions of fey races, weird, magical, and unpredictable spaces, it will start to feel as familiar as the material, just with a different label - especially if your PCs never go back to the material. You need reference points and comparison.
I like the mention of having more normal phbish races as to have it feel foreign to them.
Perhaps you can do 50/50, with Feywild "pockets", appearing at random places throughout your material plane (in whatever world). An entire session or 3 can be spent in that pocket but the overall coat is material plane stuff. The excitement of gameplay comes about when the group reaches into pockets finding lint AND a fey-touched Mind Flayer.