Just 1500 points - we have found that 2000 whilst a good balanced fight takes significantly longer especially if both armies have a higher break point (Orcs vs Tomb Kings etc.) and that's not good if you are doing a day with tables waiting for an opponent to finish!
A couple of years ago we did one with objectives but this time it was just to breakpoint really. The obelisks i have there are just for "window dressing". I always intend to make more of that kind of thing like you see in the old GW official photographs.