Quote from Snaks42ohmaygawd not this thread again. Please for the love of Diablo, search the forums if you want to complain about this, there's about 4 hundred threads.
More on topic: There's so many good arguments for the skill system in diablo 3, you just CAN'T argue against it. Your main point; Replayability. Leveling new characters because you are forced to, because you made a mistake with the broken stat allocation system and skill trees did NOT contribute to this. Look back to playing D2. You could level to 85 in no time. This was not why you kept playing. Instead it was the item hunt. If replay ability to you = forcing people to level characters, when most didn't like having to level that 3rd amazon because they screwed up, then that's fine. But don't try to force it on the rest of us.
The fact is D3 has thousands upon thousands of more, viable, and different builds than D2 ever had. Hacking and more importantly duping will be very limited in D3, causing those super rare legendaries to actually BE super rare, thus dramatically improving the item hunt from D2. D3 will give you the ability to farm the entire game, reducing the mundane task of having someone teleport to Baal, open portal, kill and repeat.
TLDR; Your kidding yourself if you think *having* to level characters was why D2 was fun. D2 was fun because of the chance of really cool, rare items dropping, and actually playing your character. Just because you can switch your skills doesn't mean you have instant access to every build. Every build is going to need, for the most part, different gear, different runes, different gems. It has replay ability, more so than any game I've seen.
I think you are assuming what I believe to be fun. And no, I'm not kidding myself. I've played the game for years, I think I know what my own opinion is by now.
Yes, Magic Find is a factor in replayability, but that is nothing close to what I am arguing. I think the old skill system is what kept people interested and trying new things. I don't like that you can simply, change your skill bar, wait a minute for the skills to become active, and you've essentially got an entirely different toon. I can try out all my builds in a week.