I'd love for ANYONE on the main cast really to get a fossil pokemon THIS gen, as that would mean one out of two chance to see a great deal of Aaken and Archeos in the anime. Fossil pokemon are usually shafted in terms of appearance in the anime because they are supposed to be very rare, which does make sense, but I'd at least like to see some with Trainers once in a while. Pretty much the only appearance a fossil pokemon has had with a trainer is Cradily with Nando, and we only saw him with it once.
Personally, since Ash isn't likely to make many more captures this saga, I think an Aaken and its evolution would fit well with Iris, they learn a relative lot of dragon-type moves and dinosaurs have always been seen as similar to dragons. Plus I can see its colorful plumage contrasting well with her hair. That being said, if we do see an Aaken or Archeos with a trainer this generation at all, it will be with N in his final appearance, and that's only if N shows up in the anime, he appears in the same place in the plot that he does with an Archeos in the games, and he has his full (not counting Zekrom or Reshiram, anyway, since he's very unlikely to have that) in-game team.