A++ for effort
this was a great project to have worked on, i play the original SSB for n64 quite often (yes, there are people that still do) and i loved this.
I would have liked to see the original voices from SSB and SSBM where possible, as well as a second attack button for specials, but i bet that due to copyright and sprite limitations those were not available options.
anyways, keep up the great work, id love to see more of your flash in the future.