It really looks like Smash was a big break for Xander, honestly. I mean, the other announcers had careers in voice acting before and after Smash, but Xander's relatively new to the industry; it looks like he's only been in one or two games before Smash 4. He's really going out of his way to make a name for himself thanks to Smash (I only knew Brawl's announcer as the Bill Nye guy, and I had to look up Harrington and Manning's names to confirm they've done work outside of Smash, for comparison), as well as to endear himself to the community, and of course, we all really appreciate it. Line #3 was amazing!
I also appreciate him not getting in hot water with Nintendo by saying anything too lewd or saying anything close to the name of another Nintendo character. As amusing as a clip like "Riddle me this" would be, I don't want to finally get that hypothetical Ridley DLC, only to hear some other VA saying his name! However, even though I don't want to be a bother and make any requests myself, I will admit that I'd totally be in favor of a "Karissa the Destroyer" clip.