Simple as that, do you think a mostly Haemonculi-based army could be competitive?
Of course there would have to be other things to be taken in, personally I think the Talos and Chronos sound interesting.
Admittedly, I'm not a
DE player myself (...yet), but I've had a few glances at the codex and the Wracks, Grotesques and the Haemonculi have seriously piqued my interest (mostly because I'm a regular Eldar player and they seem like they're the most different from what
CWE offer).
Maybe I'm totally wrong and they are boring as hell and totally remind of
CWE, but hey, then do notify me.