Spears on mortek guard. Swords on deathriders. I also didn’t assign command trait and artefact. But i mean, that i need to know the army more to know what will be the best options.
but i think there is farily much room for a lot of different models. Of course id you take katakros, you’ve already spent 1/4 your points, but this is not bad, and you could easily swap immortis to stalkers or an extra harvester.