First of all, let me say that I use blizz-abs for the mmo I am making with RMX-OS and I have no problems lag wise. If the problem is map size then you should split them into more, smaller maps. Anyway, it would take a pretty advanced scripter to make a plug-in that processed Mr. Mo's ABS for all players. Honestly, when I look at the plug-in for Blizz-ABS, I can't understand half of the things Blizzard did in that script. However, if you do want to do it, you would definitely need to make a new extension for the server to process it in addition to the client. Sorry, but that's about all I can help you with.