The "What Now" panel is awesome but could use a few tweaks (if possible):

1) Hide completed achievements - if I'm looking to see what else I can do I don't want to know what I've already done.
2) Group zones/dungeons/raids by continent/xpac - Clicking on "Zones" reveals a list of EVERY zone, which I then have to scroll through.  It would be easier if clicking on "Zones" revealed "Eastern Kingdoms/Kalimdor/Outland/Northrend/Pandaria/Draenor" and then clicking on that particular continent revealed its zones.  The same for dungeons and raids by xpac: "Classic/BC/Wrath/Cata/MoP/WoD".
3) For raids and WoD zones, filter the smart search by which subzone the player is in.  This would hide achievements related to Darktide Roost while the player is standing outside their garrison.