Yes, adding replies may be a worthwhile option to add. Seeing a bunch of 0 replies may deter someone from clicking the link though. Of course seeing a higher number encourages it. Let's see if anybody actually uses this board section. If they do, I have no problem adding it. It's easy as pie.
The board certainly does support Guest accounts, however I agree with Grave Wisdom. Allowing guests to post and having immediate activation are all nice in theory, but the sad fact of life is, people abuse the system. It's been proven time and time again on many boards. Anybody with something intelligent to say will take the time required to register. That's my line of thinking anyway. If they don't want to take the few minutes to register, I don't want to take the few minutes to help them or consider anything they have to say.