Spoiler tags seems like a good idea. Sprites and percentages after each turn as well. As for leftovers/life orb, do we want to introduce it then take it out, or just list at the start of the battle. Although since we are doing spoiler tags introducing then taking it out probably makes more sense.
Extending from that, which of your pokes have Life Orb / Leftovers? Since Pokemon Online logs do not display recoil from Life Orb or healing from Leftovers in the log.