After playing Feral Orks at Castle Assault in 2018, I can testify they are a nasty, and sometimes crazy list, when the Orkasaurus get critted and run off the board edge - twice over 6 games. The most important thing I learnt after game 1, was put the Wyrd boy witht he 45cm MW5+/AA 5+ (MW) is put that chaaracter upgrade on the orkasaurus not on an infantry stand, as units can not shoot from the Orkasaurus, and must dismount to provide ground based AA.

Also keep the other formations like Boar Boyz and Junka Trukk mobs in the AA bubble of the Orkasaurus, and group those lovely DC6 walking War Engines together in groups in case one runs off the board, or to swap them so one is placed in front of the other to block LOS to the enemy when one gets low on DC.

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6mm wargaming is just like 25mm wargaming with more units fitting on the same size table. Thus bigger games to get lost in and avoid the hassles of everyday living, and offerings for the dice gods.