I fell away from WHFB just before End Times started, and now that AoS is starting to get really good I'm excited to get back into it. I always regretted not starting an Empire army back in the day, and I have an abundance of Dark Elf models with some random High Elf and Wood Elf stuff, so now seems like the perfect time to lean hard into Cities of Sigmar, staring with my aelves and adding on some empire or even dwarven stuff.
Here's what I already own. What CoS units are the first things I should pick up to fill in any deficiencies or missing roles? I'd like to focus on Freeguild / Ironweld/ Collegiate Arcane / other old "Empire" stuff if I can.
Dark Elves
1 Black Dragon with swappable characters (Dreadlord/Sorceress)
1 Black Ark Fleetmaster
3 Supreme/Sorceresses on foot
2 Assassins
Many* Dreadspears
Many* Darkshards
16 Corsairs\
5 Dark Riders
10-12 Drakespawn Knights
Many* Black Guard
~15 Executioners
5 Shades (Counts-as for Shadow Warriors?)
2 War Hydras
High Elves:
2 High Elf Princes on Griffons (Counts-as for Freeguild General on Griffon?)
2 High Elf Mages (Battle Wizards?)
Many* High Elf Archers (Counts-as for Sisters of the Watch?)
20 Lothern Sea Guard (Count-as for Sisters of the Watch? More corsairs?)
20 Sword Masters (Counts-as for Wildwood Rangers? Freeguild Greatswords?)
~20 Phoenix Guard
10 Ellyrian Reavers (Counts-as for Sisters of the Thorn? More Dark Riders?)
5-10 Dragon Princes (Count-as Wild Riders? More Drakespawn Knights?)
Wood Elves:
I think I may also have 5-10 Wild Riders lying around somewhere.
*Many = At least enough for 1 large unit or 2 small units in WHFB, probably enough to field 2 or maybe even 3 units in AoS.
Other DE models I have that probably have no use in CoS: 3 Masters/Dreadlords on foot, 1 Master/Dreadlord on Cold One, 1 BSB on foot, 1 BSB on Cold One, 1 Supreme/Sorceress on Cold One, 2 Repeater Bold Throwers, A bunch of Khainite stuff that's part of the Daughters of Khaine faction now.