It will probably take me a bit to warm up to, but I can't say athlon didn't sound strange when they came out and I was still on a K6-2. I guess this is probably not a bad idea for the most part. Core 2 duo isn't exactly a thrilling name either, but is probably worth more of a name change since intel drastically changed their processors making them efficient for once.
Tho I never still really liked it or the sempron name, but that doesn't matter I guess. Phenom is a different name that sounds more natural than sempron when saying it or listening people try and guess how to say it.