So it seems people's comments (both here and on the video's page) generally fall into these categories:
1. Choice of combos suck.
2. Shield breakers are boring.
3. Online matches suck.
4. Quality sucks.
5. Daft punk sucks / is overused.
6. Isai doesn't like it.
My responses.
1. I'll admit that there were clips in here that weren't particularly impressive. However, I think it's worth mentioning that my primary goal was not to highlight any one character, but to showcase Isai's prowess with all of the characters. In order to maintain this balance, I was forced to put in not-so-awesome videos of Isai's less frequently used characters, like the Luigi on Ness double Up+B combo. As for the complaint that I really did miss some of his best combos, such as Pikachu's off-stage stuff, I guess there's no real excuse for that. Because I'm not at the same level of skill as some of the guys in this community, perhaps I'm naturally drawn towards clips that are more visually impressive than technically challenging.
2. Well, too bad! Like I mentioned in my first post, this video started off as a shield breaker compilation, and I thought keeping them for the full video was a nice touch. As to those who say breaking shields is not challenging, I would like to remind you that what is impressive is how consistently Isai is able to pull them off in so many different situations.
3. I've never played online matches, so I'm not aware of the differences.
4. Aye. Someone mentioned getting a Youtube downloader. Can anyone recommend a good one?
5. Wrong.
6. So what? In the entire history of youtube, I remember off the top of my head only two instances in which Isai made or replied to a comment without saying "ur dum" or something to that effect (the first was him praising someone for calling someone else dumb, the second was him explaining how to teleport with Jiggly). As impressive as his smash skills are, Isai's interpersonal skills are severely lacking, and it is for that reason that I consider his poorly articulated opinions on my video to be irrelevant.