As for weaknesses, 1 and 4 aren't that bad in my opinion. /r/Smashbros should be sort of a stepping stone into competitive smash. Like, if you have no idea what a wavedash is, then that information should be readily available. But if you want to know something more specific like chain grab percentages on Fox or whatever, stick to Smashboards. The character/game specific boards provide so much more information than anything anyone would bother to write out in a reddit comment. Not to mention that between Smashboards and YouTube and people like Kadano, there's more information out there than ever. Besides, if we want to attract new players, we should first get their attention with fun content. If they see a cool combo, then they'll usually wonder how it's done and ask a question. Most new people probably wouldn't stick to read a post titled "How to set up frame traps against Fox on FD". That stuff is only interesting after you understand the game. The goal of the sub should be to get newcomers excited about the intricacies of Smash.

At least for me, /r/smashbros was my training wheels. I learned all the basic concepts about competitive play and tournaments and stuff from just hanging out here for a few months. Now, if I want to get even better, there's plenty of resources to do it. I kinda assume that most people are new here and not so great at the game. That being said, most people are unqualified to answer some questions or just answer with experience drawn from For Glory.

Which brings me to my second point...

There probably should be some restriction to incredibly basic or vague questions. Questions like "How do I beat Diddy?" are way too common and way too vague to produce any sort of helpful answer. Also the answer to sooo many questions like "How to consistently Short Hop?" is always just practice. Then there's questions like "I'm getting stomped in For Glory, help?" or "I got a tournament tomorrow, how do I win?" where people expect there to be some sort of super secret tech that automatically makes you win.

Well, that's my take on things. I don't mind seeing gifs, they're kinda inspirational. Like when I see Mango playing Fox and then I play Fox I'm like "damn why I am so slow" and it makes me want to improve. Even funny gifs like that one guy left hanging or Rolex dancing is good in my opinion to make it clear that competitive play is not always 100% super serious no fun allowed zone (which seems to a really prevalent perception given that Brawl thread.)