- I´m pretty sure (though I´d have to check) that the demons are cheaper to maintain than Varangians; also, they´re spearmen, not heavy infantry, so they are countered by different troop types.
- I think necromancers are mostly supposed to be sort of a stopgap until you can summon other demon troop types (and don´t forgot you can also choose not to go down that legacy track at all); 300 weak MAA also do a better job of convincing the AI you are strong than 100 strong MAA do, which can be useful earlier on. I don´t know if siege progress from the Sapper perk is calculated by company or by troop numbers; if it´s the latter, 300 necromancers would contribute three times as much as 100 skirmisher demons.
- You make a good point about Sloth. Build time and army move speed penalties sound like appropriate effects for Sloth - perhaps siege progress and siege phase length, too. Maybe it could also give reduced Tyranny gain as a bonus, because people just cannot be bothered to get all worked up about things their ruler does - that´s *soooo* much effort.

I completely miss that they are spearman lol. Then it’s actually worse. Heavy infantry are everywhere. Siege progress counts per regiment; it does not matter if it is 60-300-100-10. Moreover, Necromancer costs 800 and other demon troops cost 900-1000, so there is no point buying them.

Necromancer base stats are 10/10/0/10, so 3,000/3,000/0/3,000 for a full company, compared to 3,400/2,800/4,000/2,500 for a full company of demon skirmishers. So, comparable combat stats, slightly better screen but no pursuit. Together with them taking up more of the supply cap, I´d say that´s more or less balanced by the lower cost.