SNIP
>
>Supporting backward compatibility was the greatest mistake. It forced to keep lot of old stuff, most likely making source bulky and hard to maintain. It is nice to have 5 ways to do the same thing, but if 3 of them are pretty old and unusable then it does not make sense.

Really?
You've seen the source and assessed the high cost of maintaining such compatability?

You are a lucky (and rare) person to have done so.