Broken RDs

I broke a friend of mine's rear derailer--it's Acera--quite some time ago, and recently 2300 of my own.

The story is simple, they have different 'break point' so I just assemble them at different hinges. So:
+ =

But, uhmm... the inside hinge (the one closer to the frame) is tilted too much, and likely renders the derailer unusable.