Yea, I totally agree with that.
We're in the process of moving all the issue tracking to github, the issue tracking and roadmap on this site should be cleaned up soon.
Moving forward, "Cocos" will be the game development package we're going to release. And it will come with Studio and Code IDE.
we're going to merge jsb back into cocos2d-x engine, as soon as that happens we'll have js support.
All-in-one IDE is always the goal, but it will take a while till we can get there.
I want it too, so it will be there next release.