Topic shouldn't be locked yet but you should edit your topic body and update it with o_e_l_e_o suggestions so the discussion can be based on it since his suggestions is more appealing. The topic can be locked when you notice the discussion are been diverted to something else (off topic).

It's an interesting topic, and I just changed my mind from disliking the idea to liking it based on o_e_l_e_o quoted suggestion.