I like the inklings a lot but I won't vote for them as I think they should be a prominent newcomer for Smash 5. I don't think a major new series by EAD should just be DLC. Otherwise what are we gonna get for Smash 5? Assuming that game will come out someday, even if Sakurai won't be involved anymore. Does anyone else think alike?
This is longwinded, but bear with me
Rosalina & Luma, Wii Fit Trainer, Shulk, Dark Pit, Robin, Lucina, and Greninja didnt exist during the planning and development of Brawl.
Palutena, Little Mac, and Bowser Jr. were created long before Brawl, but they got into the latest Smash Bros. because of post-Brawl games. Theyre based on Kid Icarus: Uprising, Punch-Out!! Wii, and New Super Mario Bros. Wii/U, respectively. Similarly, Sakurai briefly considered including Miis in Brawl, but at the time they were seen as friendly avatars. Theyve since appeared in more action-oriented games, and that made Sakurai more comfortable with putting them in Smash Bros.
Duck Hunt is a retro character, and we can probably expect to see another resurrected classic in the next Smash Bros. On the same note, Sakurai only wanted to include 1-2 guest characters in Brawl.
Villager is the only newcomer who could have plausibly been included in Brawl. Thats one character out of 15. Its not unreasonable to assume that the field of candidates for the next Smash Bros. will consist largely of newly relevant classic characters, characters who dont currently exist, and a couple of retro/guest characters.
None of us know what the state of Nintendo will be in five years, so withholding potential DLC in order to make the roster of a hypothetical future Smash Bros. seem more attractive is utterly pointless. Let Sakurai cross that bridge when he comes to it. Including two or three newcomers as DLC isnt going to negatively impact the next Smash Bros.