I think played a class for a long time makes it lose a bit of its luster simply because you've played the hell out of it.

Take your own comment for example. You say "When I play my rogue it feels as it should, a sneaky toon lurking around ready to shiv your kidney." but after playing a rogue for as long as I have it doesn't really feel that way anymore. Stealth is devalued now probably more than ever. When you have larger health pools stealth matters less because you're going to knock off less of the health pool in the opener. This makes the class play a lot more like a leather-wearing warrior because you don't really care that much about the opener.

So when you play a class for a long time I think you lose something. I have a warrior alt and it's awesome. I feel like a berserker who rushes into any battle, ready to take on all comers. I don't care for strategy or subtlety, I'm here to crack some skulls. So I think warriors do have a clear feel and goal, it's just sometimes hard to translate that thematic into game mechanics that will still make sense (like a warrior having a long cc...why? A true warrior would never avoid battle by delaying it).