The idea of a disassociated account is great in theory because the users won't see your moderator tag and automatically assume your word is law or however the users think of the moderators.
However, in practice I can see this as being difficult because having multiple personalities, especially in text, is very difficult to do. Keen users will catch on to your writing style unless you're really good at hiding it. and your cover will be blown.
Instead, as mentioned in the linked question you just have to learn to deal with it. Eventually, the users will get used to having a moderator in their midst and you'll be treated more as part of the community rather than someone who can drop the ban hammer.
I believe in some forum software there's a way of "hiding" your moderator rank behind the default members one (making members primary, moderators secondary) but again, it's easy to tell you're a mod.
So, pros: helps protect against the "pedestal" effect by users. Allows you to contribute your ideas or thoughts without it seeming though you're speaking on behalf of the community's staff or site.
Cons: You can be easily caught and outed as a moderator, making your efforts fruitless.