i think boomer's baby will be a unique creature. the powers and possible knowledge of a cylon, but instead of just being an individual like the other bio-cylons, the baby will be completely disconnected from the cylon hive mind, a complete individual.
i bet the prego boomer went to get a ship.. starbuck could have probably squeezed helo into her cylon ship, but boomer wants to ensure her and her baby's survival. because boomer has broken away from the other cylons, its just as dangerous for her to remain on capricus. maybe she'll get a nice ass ship she can use as barter for an asylum.