Why no Hydra or Chimera in DF?

I've seen enough +1 peeps failed horribly at both not sure the horror ensued when both available through df

I like joining Titan DF groups just to see how bad it is. Last 3 i've joined hasn't even made it past the 2nd round of stomps lol.

Trying to develop my Relic weapon. Still no Chimera on the DF.