Are there any theories based upon Dark Matter (DM) being a precursor or sublayer or ground state to Observable Matter (OM)? Pre-Big Bang? Galaxy distribution linked to DM tendril intersections is consistent with DM providing a pre-existing structure. Any theories based upon DM interactions being able to occur faster than the speed of light since DM only interacts with OM gravitationally? Are there experiments which indicate that gravitational effects are limited to the speed of light? If DM gravitational effects are not constrained by "c", wouldn't a lot of cosmology ideas be changed? Do such theories provide alternative solutions to questions answered by Big Bang, Inflation Theory, Quantum Theory? Maybe DM scale is below Plank size limit.