We recently fought a Successor battle with DBMM at our club. The armies were equal points - 500 apiece - one being based on Antigonus One-eyed's forces (Asiatic Early Successor) and the other being Seleucid. It was similar to the clash at Ipsos which resulted in Antigonus's death. It is possible to recreate the coalition force at Ipsos using the Lysimachid list but I was slightly short of some of the necessary troops, especially the eight elephants needed for one side.
I feel Successor battles work best at 500 points (or more) as it gives you enough points to have a sizeable phalanx while still having the troops to fight a good battle on the wings.
Here are a couple of pictures - the club lighting isn't up to much and using the flash didn't improve the pics much :(
Here is the Antigonid phalanx, flanked by a vineyard. The Seleucid elephants are advancing. They should be towerless at this point but I haven't finished the basing of the ones I have - it was a last minute decision to use these armies!
The clash of pike. The Seleucid argyraspides initially killed a number of enemies but overall there was enough toing-and froing that the Antigonid's were beginning to threaten the Seleucid flank. Out of shot, the rest of the Seleucid pike were beginning to beat the rest of the Antigonid phalanx.
Next - some photos of some Successor generals.