I was reading the "Worst of the worst" spells list and got to think, what would happen if the HD limits on Sleep and Deep Slumber were removed?

I remember a time, way back when, when all mobs' spells were extended our party got hit with a Deep Slumber. We had to wait 10 minutes, on more than one occasion, for a party member could wake up and we could advance. This was back when the level cap was 12 or so. The group was under level for the quest and we needed everyone for it.

That said, if the duration was significantly reduced like the way Crushing Despair was (which I hate, by the way, I love using that spell on my enchanter), then the spell would be tolerable as anti-player CC.

From the mob CC side, could it be too powerful when used in conjunction with other CC spells.

For example: A group of mobs at a distance. Caster turns on Enlarge. Target group with Mass Hold Monster. Whatever saves gets hit with Deep Slumber. Any remaining stragglers get hit, alternating, with Hold Monster and Sleep. Thus a large group is quickly neutralized. A well coordinated party would target the held mobs first and then the sleeping ones as the sleepers will wake up once hit.

Is this too much? Or is the CC that DDO has been lacking?