I think it's silly to bar people from joining the game. I'm sure any security threats have been long since passed now. I think it should be open all the time and closed with emergencies, but I also think it might be a good idea to open registration during a closed but set and publicly known period of time. It took me ages to register into this game because of this registration bar, almost six months because I had so much to do and every time I checked, registration was closed. I had almost given up until, to my surprise, registration was open. However, if whatever the cause of this was and is still an issue, then it should remain as it is now. It's still possible to register, it's just very, very hard. I can see the benefit and loss from all sides, really. And besides, if someone really bad was trying to get into the game, they could just get in like everyone else. Changing up registration doesn't do much against such relentless people.
Another thing, about opening it up at certain times or having it open 24/7. If we do open it up at certain times, then that would mean during those times the server lag in FeralHeart would be horrendous. However, if we have it open 24/7, while at first we would get a huge wave of people getting into and playing the game, the lag would eventually die down and settle out once people stopped registering naturally. It would also die down the other way, but it would take much, much longer. I'm now starting to lean more towards keeping it open at certain times because of this, as after the registration period is done, the lag would be gone, and we could get back to our merry ways.