Comment 38 for bug 239462

I agree entirely with Dave Jakeman and comments 33 and 35.

His solution seems very natural to me, and it avoids preference bloat. Also, if the proposed tooltip delay preference doesn't make it into mainstream preferences, and is only accessible through "about:config", it marginalizes the feature, leaving most people with the current, awkward behaviour.

Making it behave intuitively regardless of preferences brings the solution to the masses--not just those who know how to tweak the config.