If you take the codeset it is going to be for Brawl+.I have a question...
Do these characters work in regular Brawl as well if you use the codes? Or are they "tweaked" to Brawl+ so the different physics of vBrawl will mess them up?
Technically you could take all the codes that start with Mario's ID number and only put those into a .gct and only have the Doc changes in vBrawl.
But you are right in saying that they are designed specifically with B+ in mind, and Doc's combo game would disappear in vBrawl; I suppose Doc wouldn't be totally screwed in vBrawl like the B+ Roy would be though.