Maybe I'm using too much WhatsApp and Telegram and see Emojis as the modern "smileys"... ;-)
OK, I have done 2 "Smileys Packs" (emojione-smileys + openmoji32-smileys) to just replace de Default Smileys in local easily ( just download and copy the smileys.local.conf from the folder you want to conf/ ).
I'm using the default "smileys.local.conf" of the root folder of the repo, and the WYSIWYG editor looks like this:
Comparison between old smileys and posible new ones:
EmojiOne (WYSIWYG Editor)
OpenMoji (WYSIWYG Editor)