Are Tools which Locate Bug Inducing Changes Automatically Useful?

Dear NetBeans Developers:

Sorry for the bothering at the first place.

I am currently designing a tool which targets at locating the introducing
revisions for reported bugs (the revision that triggers the bug or
regression) . However, I am wondering if such a tool can help you
debugging or fix the bug in practice. Therefore your feedback is *essential*
to me :-)

From some developers' feedback, I got the following potential benefits that
bug introducing revisions can provide if they are obtained:

1). Assign the committer of the bug introducing revision as the responsible
developer for the bug since he is familiar with the buggy code.

2). Back out the revision in order to debugging the bug

3). The bug introducing revision can provide some contextual information
for fixing the bug.

Do you agree with these benefits? or you think there are other benefits?

Thanks very much for reading this email!!
I will be much appreciated if you can give me some feedback :-)

Thanks again!!

Best Wishes
Justin