I am not sure if Cleggie was ever seen as a hero, and I can't remember any time in the past where the Libs were seen as heros either.
Cleggie is paying the ultimate price for supping with the Devil...he has found that his spoon wasn't long enough. Despite all the distracting noises off, from UKIP and the like, we still like our politics to be as simple as possible and a third party will always get squeezed in the middle.
Cleggie became Deputy PM by default, as a way for the Tories to become the Government. He and his Party served no other purpose. If the Tories had won a few more votes, then we wouldn't be talking about Cleggie at all.
I don't dislike him as a person, as he seems a decent enough chap but its his Party that is being ridiculed, not him. Before the 2010 election, not many had heard of him and I think that in a few months time, he will sink into obscurity again, just like Charles Kennedy before him.