'pre-assembled' sounds like some mix & match that may not work at all. let's see diablo2 so-called random dungeons which are merely rotated maps. i hope random means random, not pre-this or pre-that. it's pre-historic.
@Janggut
Hi. <img src="/ubbthreads/images/graemlins/wave.gif" alt="" />
If you followed what Raze said carefully you might notice that it all depends on the battlefield definition and what goes in one? If a BF was only a different ground and rocks and some selectable enemy NPCs and perhaps some items or weapons to collect then I do not see any merit in pre-assembling primitives of replay-ability.
The only merit in preassembled BF is when the editing tools enable the editor from scripting a micro-scenario with trigger objects and coordinates that initiate consequential effects/ rewards, which is second to structural obstructions that demands a strategy to win that battlefield.
There exists no artificial intelligence module that can randomly assemble such a unique type of a battlefield (sub-quest).