Wouldn't it be enough with two years of discussion and some theory-hammer?
- No one uses any other daemons than Flamers...
- Average summoning 4 daemons scores (approx.):
Flamers: 4 hits + 3 supporting + 2 counterattack.
Bloodletters 4 hits + 0 support + 0 counterattack.
Daemonettes: 3 hits + 0 support + 0 counterattack.
Plaguebearers 2 hits + 0,5 support + 0,5 counterattack.
(You summon, assault and lose one (unless you have to get into CC...), retain and assault, then you get a bit shot at, lose one and assaulted (in witch you get to FF again unless you're stupid (or your opponent is in case of BL.)
- The proposed change would make Flamers: 3 hits + 2 support + 2 counterattack.
- Saves are almost irrelevant unless you are targeted by barrage or lack FF attacks since you are able to keep your precious flamers guarded by TS, rhinos and marines.
I guess I might be totally wrong at this...
Another take on the "the 4 types of deamons will never be equal" is more radical. Why have 4 marked types + one undivided? Why not make a few different deamons based on "function" in the game? For example:
CC-daemons: 15 cm, 4+, 4+, -, Blades and Claws: Assault Weapons EA +1, Inv Save, Summon (1)
FF-daemons: 15 cm, 5+, 6+, 3+, Flames, Flies and Screams: small arms, Inv Save, Summon (1)
Daemonic Beasts: 20 cm, 4+, 3+, Claws, Fangs and Bad Breath: Assault Weapons, Inv Save, Summon (1), Infiltrators, First Strike
It would be simpler for the players knowing what you were using and facing, and the problem of balancing 4 cc daemons and 1 ff daemon in a game where FF is King wouldn't be a problem any longer. Of course, this would need some playtesting, and if it turns out to be too powerful that you always can choose your type of daemon freely, the stats could easily be adjusted a bit.
I understand that it is a major point to most players that the old names of the daemons are kept, I was just thinking a little outside the box. And it wouldn't be much of a problem to write somewhere in the army list that CC-daemons represents Bloodletters etc.