@ Aurog - They would anyway, being barded steeds. The horsemen are the ones who would be slowed down by having the tank with them.
@ Reec - Here's what I scribbled down last night before bed:
H: Exalted -
MoK, sword of might, favor, shield, jugger = 205
H: Sorcerer -
MoT, power familiar, scroll, steed = 206
H: Sorcerer -
MoN, puppet, steed = 191
H: Sorcerer -
MoS, spell familiar, scroll, steed = 181
C: 5 Horsemen -
MoK, musician, flails, light armor = 116
C: 5 Horsemen -
MoN, musician, flails, light armor = 116
C: 5 Horsemen -
MoT, musician, throwing axes, light armor = 106
C: 5 Horsemen -
MoS, musician, flails, light armor = 96
C: 5 Warhounds = 30
C: 5 Warhounds = 30
S: 5 Knights -
MoN, standard, musician = 260
S: 5 Knights -
MoT, standard, musician = 250
S: 5 Knights -
MoK, musician = 240
S: 5 Knights -
MoS, musician = 220
TOTAL: 2247
Thinking behind the units:
Exalted > I think cheaper is better, and with so many attaks and great stats already the magical s6 attaks should get him by just fine. Shield for 0+, favor cause I had 5 points.
Sorcerers > The puppet seems pretty mandatory, especially with so many casters tossing 3 dice into things. Power familiar lets tizz-man pump more dice into his harder to get off spells (nice with +1 on top of that). Spell familiar means pinky has a better chance of getting the slaanesh spells that are useful against ItP armies too
Horsemen > Didn't change much, just gave t.axes to the tizz boys as their mark seems the least geared toward getting stuck in. I had wanted to give spears & spears to slaanesh for flavor, but being able to charge small fear-causing units and flail them to bitz seems to be their aggro role (their more passive role being baiting and such).
Warhounds > Needed points, and 20 dogs seems a bit much in an army of 44 other cavalry models ... 2x 5 should get you by, with all those fast cav to help out with utility work too.
Knights > Ended up giving standards to the knights with marks geared toward survival but not necessarily combat superpower. I also think the tizz and nurgle banners will be the most fun to convert

Kr0n doesn't need a banner, especially if the jugger is running with them, and slaanesh, well, I had originally given them the rapturous standard for fluff and lockdown! capability, but decided to keep them cheap (which is the best thing going for slaanesh knights,
IMO).
- Salvage