Okay so this may be a biased list but here is a list of things I would want to see in future releases of the distro:
1: Allow installation of pepperflash in the installer: Now that chromium no longer works with normal flash and flash is going to be dead if Antergos wants to use chromium its fine but for the olve of pete offer a prepackaged version of pepperflash or something, I understand why antergos doesnt want to ship it by default but at least keep it in a community repo or something.
Hey there is a multimedia repo why not put it in there?
2: get a better gui front end for pacman
PacmanXG sure as heck has its issues for me, I find pamac a better front end. Sure without proper settings it will stick out like a sore thumb on KDE but PacmanXG is a rather weak front end.
3: Speaking of KDE, get rid of friggin gnome shell and go KDE in the future. Not only ids kdenext a better transition here in the future but unlike the gnome project KDE isnt dominated by crazy people who hate features and love sticking things in dumbed down UI’s, speaking of which
4: replace totem with something better: the new totem sucks its beyond broken and does not even bloody work. Replace it with VLC or Mplayer
5: offer firefox and thunderbird options in the installer: self explanatory, while chomium is okay it lacks all the plugins so firefox is now a must until it too dumps plugins (but hopefully that time no plugins will be needed and a time of sanity will finally come)