It is a good idea but...........................
I have some suggestions to make this video series better.
1. It is sort of a rip on SMBZ ep 1, like how it starts with a race.
2. What is with this sudden combination between Mario and Sonic.
3. kick the Koopa Bros. they are filler charcters really.
4.Needs to be longer .
5.I think Bowser Jr. needs a role (use ML PIT Baby bowser)
6.You could add another series so it does not loook like SMBZ (like Rayman).
7.Sorry, but please if your are trying to be Alvin Earthworm just quit.
P.S. May I help you with finding, creating, and improving sprites.