People apparently don't really turn into salamanders from using the "Threshold" transwarp drive. People turn into salamanders from using that drive and getting stuck on a planet where the salamander shape is advantageous, such as the swamp Paris and Janeway were found on. Had the shuttle popped out of transwarp somewhere else, something else would have happened to the two...
That Tom was able to bring the shuttle out of transwarp that close to the mothership means he had mastered the drive. That wouldn't be a problem, then: the shuttle could successfully be aimed to the general region around Earth. All they would need, then, would be some means for the shuttle to alert nearby UFP assets to deal with the arrivals. But there's no telling what the passengers would turn into, in this reputed process of "hastened evolution", as they supposedly would evolve to match local conditions. Not all of the evolutions might be so easily reversible.
Timo Saloniemi
That Tom was able to bring the shuttle out of transwarp that close to the mothership means he had mastered the drive. That wouldn't be a problem, then: the shuttle could successfully be aimed to the general region around Earth. All they would need, then, would be some means for the shuttle to alert nearby UFP assets to deal with the arrivals. But there's no telling what the passengers would turn into, in this reputed process of "hastened evolution", as they supposedly would evolve to match local conditions. Not all of the evolutions might be so easily reversible.
Timo Saloniemi