What are the potential drawbacks of using fonts *too* similar to Comic Sans, even if I dislike the original font?

Using a font that's almost identical to Comic Sans can still evoke the negative associations people have with the original. It might appear as if you're trying to subtly use Comic Sans while avoiding its name. It's often better to choose a font that's *inspired* by Comic Sans's qualities but has its own distinct personality. This avoids the baggage and creates a more original look.