My forum quote aside (though I stand by my extreme annoyance at pants turning into underwear or miniskirts for real in-game gear), what really irks me is chest gear. Just going through the Mogstation: let me use the Snow coat, or the coat from the Far Eastern Officer's set, or the top from the Far Eastern Garb for Men, or from the Lord's Suikan Set.
Let me have the vest from the last Valentione event, instead of the dress. Etc.