There’s not normally much reason to add a brim to a knit hat. And by “much reason,” I mean, generally, there’s no reason.
Unless you want to knit yourself a bitchin’ conductor’s hat. In which case, totally justified to include a brim.
Wait, what’s that, Hat Model? This isn’t actually a conductor’s hat at all? It’s really just a knit beanie with a brim?
Damn. Now I don’t know what to think. I mean, on the one hand, it’s a knit cap, so I’m sure it’s really warm and delightful. But, on the other hand, there’s a brim. And I don’t know why you need a brim, unless it’s a place upon which to perch your family clan’s colors. So, if the hat came with customizable tartan strips, then I guess I could let it slide. But since you’re stuck with just the one plaid … yeah, I’m ruling the brim as unnecessary.
Sorry, Hat Model. You did your best.