Merr, was a bit late on this one >< but I'll answer it anyway
14. What have you done in your game since having beaten the Elite Four?
After I first beat the game in late September, (which was an amazing moment btw <3), I went to bed and started the Delta ep the next morning. I pretty much stayed with the current goal until I finished it. After that, I went to the battle resort, and primarily went around catching different legendaries. So far I've got Azelf and Mespirit, Lugia, Latios, Zekrom (I think I actually made him faint because I already have one >.>), and more recently, Heatran. I also transferred all my Gen III-V friends from White to AlphaSapphire ^^ Additionally, I did some more contests, too
Then, on October 12, the second anniversary of X and Y, I started up my copy of Y version, started a new file because I had only gotten past the first gym on my original playthrough a couple years ago, but with my newly brought-back passion for Pokémon, I vowed that I would play through this game and finally finish it :)
Once I'm done with Y, I plan to go back to AS and do lots of more stuff, like getting all of the Master Ranks in contests (I wanna see more of Lisia and Ali :) ), finding all of the TMs and special items, training up several of my Pokémon, and try to do that among other things to fill up my NatDex, as well as potentially do some shiny hunting ^^
Playing AS has been a wonderful nostalgic trip, and an amazing experience, and it was a big part in ending my long slump of disinterest for Pokémon, bringing back my passion even bigger than ever :) It's filled with some of the best moments/cutscenes of the series, and it's the reason why Latias is now my favorite Pokémon :3 AS is my favorite Pokémon game for all of these reasons and more, and it's even better than what I had hoped for the Gen III remakes. I'll never forget the amazing things it's done for me :)