Do you think its a Fail for the Romney campaign that G W Bush didn't speak on his behalf at the RNC?

No

No. Although he has endorsed Mitt Romney, the appearance of President Bush (43) would have been a reminder of the failures of his administration and raised the issue of how Romney's economic policy is different than Bush's.

No, for several reasons. The first being that when Bush's term was over he said he was done with politics wouldnt be endorsing anyone or attending conventions. Secondly, even many repubs hated bush.

I thought he was a bit of a stubborn moron myself. His endorsement would HARDLY help Mitt.

Yes, Bush could have explained that Romney wants to continue and expand on his economic policies that brought on the Great Recession.