Faster Loading: For what? Loading is really not an issue to me. I'm a patient man
Homebrew from Dsi Shop: ...And we can get homebrew from flashcarts
Music From Dsi Shop: ...And we can play music from flashcarts
Decompress tool built in for larger games from dsi shop: DSiWare games aren't plentiful enough to matter.
Myspace Photo Connectivity: People still use MySpace? I thought Facebook and Twitter were the norms now. Anyway, it'll take you 5 seconds to transfer a video from your DSi to your computer and 5 more seconds to upload it to MySpace. Well, I think, I'm not really in the know about the DSi.
Flash Browser: I'd rather just use a computer, and I doubt this will ever be possible. It already has enough troubles with a basic browser, and I doubt it could handle flash videos.
Virtual Console(GBA,GBC,SNES,NES): All of which are possible through DS emulators. Get a Supercard DSTWO and you can do all of those (and probably better than other carts)
Video Service watch videos from sd card: ...And you can do that with a flashcart. Just buy a big MicroSD and either use an iPlayer (or the upcoming Supercard DSTWO) or convert videos to DPG and huzzah
Camera ability to record vids: Most cell phones have cameras, honestly, and most people have cell phones. Or just use a video recorder from a personal camera
Would You update?: No. Most of these features are done on flashcarts already, and the features that aren't done on a flashcart are pretty minimal. Free games > minimal features