I'm sure we all know of the big golden portal sitting just south east of graal city in the "brothers" area. I can't remember what it was used for before, but i was thinking it could be used as a time warp that would allow for a completely new 2nd world map doubling the size of classic making it massive.
It would keep things simple for the admins as it would be mostly a duplicate of the current world map but small changes here and there. Some areas would be open that are closed and vise versa. that would allow for an open pk map since it would be in a time period before there was graal po po. that would make some admins happy....cough Rufus.
It could also be a good alternative to night stalking or changed to be a portal to a dark land where its always night time as opposed to making the map change from day time to night.
I'm not saying the towers should be doubled . as a matter of fact i don't think it would be good at all to have 14 towers. They could easily use the current tower models as the towers and in the same locations just in the past, but also eliminate a couple towers as they simply weren't built yet in that era. I would suggest keeping mod,castle,swamp,and maybe dw but slightly modify them as they may appear different in the past.
It wouldn't hurt to have more room to spread things out and keep current areas from getting clustered up so much like the burger refuge and battle arena. With the ever growing population it wouldn't hurt to consider something like this.