First time post, I had to get this off my chest.
My biggest problem with this episode has nothing to do with them turning into salamanders, Janeway and Paris getting it on, any pseudoscience BS. What I found the most bothersome was that they essentially found a way to get home overnight and it completely passed by their attention. If the hyperevolution is reversible via the application of an antiproton beam, simply modify Voyager to reach warp 10 (or use the prototype drive in the shuttle to transport a few crew members at a time), and then have the Doctor begin treating everyone with antiproton beams (or send out an automated distress signal upon reaching Earth saying, "Please irradiate it with us antiprotons to save our lives," lather, rinse, repeat.)
At the very least, if they do not want to take the risk of sending anyone else via the transwarp drive, they could rig a probe, or a shuttle, to make the transwarp jump by itself with an automated distress signal explaining Voyager's situation upon reaching Earth. (I have yet to watch VOY past Season 2 yet, so I know of the Pathfinder project via Memory-Alpha, but I don't want it ruined for me completely.)
Am I the only one who noticed this? What they've essentially recreated were the FTL drives of the Hyperion novels by Dan Simmons (super awesome by the way); the jump is instantaneous, however it killed whoever was aboard, requiring their resurrection over a period of days/weeks (or their recovery from the hyperevolution via the application of an antiproton beam and a few days in Sick Bay in the case of Star Trek.)
It is with good reason that this episode has (for all intents and purposes) been excised from canon, officially or not. Any method of (near) instantaneous travel essentially ruins Star Trek, because we no longer have the need for ships going boldly where no one has gone before.