Sometimes, we should be too fast to judge our hubs. When you increase traffic to your new hub; your fellow hubbers might be more than willing to read your mediocre hubs. Sometimes, it may not be your best work from your point of view, but opinions are different. I am surprised at times. As per millionaire tips, I would also recommend that you fine tweek your hubs. Link your mediocre hubs to your best hubs. Perhaps add more insight to your hubs. Its easier to review your hubs than tho rewrite one from scratch; unless its really an awful hub. I cannot imagine anyone putting one up in the first place. I find that the majority of hubs of hubpages are quality hubpages. People put tremendous effort in their works.