My personal opinion is that having Hobbit (or Big Brother) take action
other than sending an alert goes beyond the scope of what it is intended
for...as a monitoring system. I had thought about the same thing at one
point, but was talked out of it.
I would tend to agree myself, except 1) some people are asking about
such functionality, and 2) it would be nice during oncall weeks to not
have to get up and restart processes such as procallator, etc.
I would be interested in hearing what talked you out of this, however.
If nothing else, I can use it to talk other people out of it ;-)