The Tukayyid book had a collection of scenarios recreating key battles for each Clan, plus a hypothetical scenario based on the Clans finding and assaulting Focht's command bunker. It also introduced heavily optimized "Clanbuster" variants of many 'Mechs from TRO:2750.
On the downside, it lacks an overall chronology for the battle (as I found when trying to use it as a guide for setting up a Planetary Invasion-scale BattleForce 2 game to simulate the whole shebang at a macro level), leaving it vague which battle happened in which order, and what forces were on-world when.
I think Tukayyid would be a good candidate for a Historical Turning Points supplement.