Isn't the point of roleplaying stepping inside your character's shoes and looking at the world from their perspective, not sitting back and watching the way the world reacts to your character?
As for responses, yes. Occasionally you get a snark about being an elf, and since most humans have only seen city elves and they assume you're a servant too, and occasionally you get a snark about being a mage. If what you want to know is if they recorded special "elven mage" dialogue specifically for the mage elf, then no. They didn't record much special dialogue in which characters comment on you being both elven and mage in the same breath outside the Origin. (Although, within the Origin Eadric is nicer to you if you're an elf, and if you pursue a conversation with Duncan you can get a special conversation talking about what it's like to be a mage elf in the tower.)
What I thought made the reactions interesting is where my character comes from. As a CE Warden, my character listened to humans calling her scum her whole life, so every time someone assumed she was a servant or lesser for being an elf, it felt like her old wounds were reopened. My Dalish had only heard of the shemlen's racist behavior from the storyteller, and so rolled her eyes or felt insulted that they just assumed she was a servant. My mage elf was slightly different. I imagine that while she endured racist remarks in the tower, she had been far enough away from society long enough that she felt like, "Oh, I'd heard/read that humans regard elves as servants. It's really weird seeing it in person." Or that she endured more grief for being a mage in the tower, and so found humans assuming she was a servant very quaint.
It's all attitude. If you go in just thinking, "Okay game, do the roleplaying for me" of course you'll get bored. If you go in putting yourself in your character's shoes, how characters react to your mage elf will enhance the experience instead of being the beginning and ending of it. I've played every origin at least up to Ostagar too, and the Mage Elf is my second favorite after the City Elf, and the one I played most often. I made no less than 6 fully fleshed out mage elves because I found the freedom to roleplay and the ways my characters could react to the world around them so much more satisfying than any of the others.