Never mess with an established site, my opinion, too risky compared to the possible reward. Google doesn't like extreme changes of the site structure, the site would recover, but it could take a few months.
As for the comments and updates: There are plugins that let you auto-update by just pressing a button and I'd disable comments on an adult blog anyway, since ALL comments are spam in adult (ok, maybe 0,1% aren't, if you are lucky).
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