Thoughts on the demo:
To get the negativity out of the way, it's a bit light on content. It's just a demo, I'll live. Also, it really would have been nice if every Platinum Status Club Nintendo member got download codes, even if it was only two per member instead of four per selected member. Like many things, Nintendo could have handled it better. Still, it's nice to even get a demo and that there's no silly limit.
The menus are weirdly chaotic because of the different shapes. It had the same aesthetic as Kid Icarus: Uprising's menus (since Sakurai's wife designs them); it just looks disordered. This is just something I noticed, and it doesn't really matter.
Enough of that. The game, even using a Circle Pad, already feels better than Brawl. No tripping is fantastic. I've never been a technical player so I didn't notice the very specific things that advanced tourney players have mentioned like increased lag, the delay after performing attacks or movements and other such things. It just feels like a tighter experience than Brawl. I've previously read that the game is faster than Brawl yet slower than Melee, and that's about right. It's closer to Brawl which I think is a good thing. As much as I laud Melee, it was ridiculously fast. I could hold my own against friends and even my brother at times, but even with more training, there's a wall I hit where it feels more like work and less like fun to get better at the game.
I'm really not used to the button placement which is to be expected since I've been using the GameCube controller in Super Smash Bros. for nearly 13 years. I tried to use the Classic Controller a few times and it felt like I was cheating on my GameCube controller. On 3DS, I want Y to be special and B to be attack because that's where my thumb naturally falls when I'm holding the unit. I'm not faulting the game for this. Old habits die hard. I'm hoping my time with the 3DS version will get me prepared to use the Wii U Pro Controller. I'm getting the Wii U bundle so I can use the GameCube controller. I feel like at some point we're going to have to let it go.
Mega Man was the first character I chose because he had to be. Previous first choices are Samus, Zelda, and Pit. ZOMG, amazing. I couldn't find an image macro to adequately describe how I felt when I played as Mega Man for the first time. Anyway, Link seemed improved over Brawl which I felt severely nerfed him.
The graphics are nice on the 3DS screen. I thought the low resolution screen would really hurt the game, but it looks great. The sound isn't great, but I blame the speakers. I'll have to try playing with headphones.
Ultimately, I'm now looking forward to the game even more which is suppose is the point of demos. Can it just be October 3 already? Stupid normal passage of time.