I miss my path companion as well.
Well, actually I barely remember him, and I forgot all about path companions until someone reminded me recently. I dont really remember it, but apparently I had a drunk womanising highlander guy who I picked specifically because every other woman was taking the elezen guy and I thought he was great. Sounds like something I'd miss.
I'd also just like variation in our companions. Even if they all shared the same exp bar/skills/etc, it'd be nice if we could summon something else. One person might like to use a coeurl, someone might like a hyur, someone else could have a goblin. Basically just different skins for the one companion. Although I'd much rather a system with a bit of plot and a questline, like path companions or the npc partner from XI.