Happy for Sun/Moon! Anyway...
I remember reading somewhere that the huge "hard reboot" tried by GF in Gen 5 (the direct homages to Kanto and Gen 1: For example, many Pokémon that seemed directly inspired from the original 150, like Machamp-Conkeldurr, Geodude-Roggenrola, Rapidash-Zebstrika, Woobat-Zubat etc, which seemed a lot like "replacements") wasn't well received , so they went the opposite way in Gen 6, which was more of a "soft reboot" with more indirect homages to Gen 1. For example, Red and Blue themes in the opposite versions, Kanto starters, an increased promotion of the original legendary, Mewtwo , and a few more things.
Now we are getting Sun and Moon. Think carefully and you'll realise that Sun is often associated with the colour Gold and the Moon is often associated with the colour Silver. Magearna, undoubtedly now from Gen 7, is associated with something called a "Soul Heart". Also worth noting is that Gold and Silver introduced the Day / Night cycle. Day and Night...Sun and Moon.
We also know that Zygarde's plot is still apparently unresolved. Probably it should be resolved in these games. Why? Someone put forward an idea a few pages back that Zygarde completes the XYZ trio, but could potentially be a part of another trio: The Sun/Moon/Earth trio. Fits neatly.
If Sun and Moon are really homages to Gen 2 like XY were to Gen 1, then this could also mean that the Johto starters are given prevalence this time around... And maybe even get Megas.
... Interesting ideas, right?