I have to wonder if The Burn effected Fluidic Space or not.
Species 8472 doesn't use dilithium, as far as I know, therefore Fluidic Space should be still intact and very much accessible for use by starships. I'm not certain if a starship could use its warp engines in Fluidic Space for small jumps across across non-Fluidic space that would actually traverse Federation space.
I also think that a list needs to be made of every species, prior to The Burn, that didn't employ dilithium in their warp engine system at all. Such factions would be a powerhouse in the 30th century to say the least.
Species 8472 doesn't use dilithium, as far as I know, therefore Fluidic Space should be still intact and very much accessible for use by starships. I'm not certain if a starship could use its warp engines in Fluidic Space for small jumps across across non-Fluidic space that would actually traverse Federation space.
I also think that a list needs to be made of every species, prior to The Burn, that didn't employ dilithium in their warp engine system at all. Such factions would be a powerhouse in the 30th century to say the least.