Hi Unseelieed,
Deadshane won Adepticon once with an blue book Ork fleet (pre FAQ), got second twice (iirc///with being best admiral as an award as well). I do not rate that as a bad fleet.
Sigoroth's track record with msm Eldar is really good, yes. But the rules of MMS are not suited to him, yes he is the original creator, the rules are written for people who are fed up with the original rules (be it because they do not like them fluffwise, or because they are to strong/bad, break a rule mechanic, etc).
But if players keep using official rules and do not have issues that's fine.
///
Back to official daemonships:
crap.
Solution within official realm: does not exist.
Solution outside official realm: BFG:R daemonship rules.