Change your email if it shows in breached lists

Even though a breach might have happened in the past, your email address is still out there and using a fresh email alias makes it much more difficult for a potential hacker to get a positive result; even if they successfully hack your old email account, they won't get access plus it better ensures your privacy and ensures that a successful hack on one account won't get access to every service you use. In any event, if your email account has shown a breach (current or past), you'll need to use a different one if you want admin status / clanforge - i've done the same for myself and will change as needed in the future; it's so easy to do.

More reasoning: An email address that's breached will likely be subjected to further attacks in the future. While using different strong passwords for different accounts is a solution, if your email account is breached, it's a simple matter to reset the passwords to all the accounts that belong to that email address. Also, don't think a breach is simply a fault of yours - in addition to social engineering to gain access to your account using answers to 'secret' questions, there's incompetence of the service provider giving access to the hacker without due diligence - see this case of YouTuber H3h3 ohnotheydidnt.livejournal.com/102472732.html

So if you have different email addresses for your various services, the damage will be minimized if that account is compromised - they don't get all the keys to the kingdom. Using multiple email aliases that have never been breached will reduce your exposure. This aspect of using multiple e-mail addresses across different accounts is discussed on the Securosis Information Security & Research Analysis website here at securosis.com/blog/consumer-security-tip-use-multiple-email-accounts-to-reduce-fraud-and-spam