Re: Warp 10
In "Threshold" achieving warp ten caused Janeway and Paris to 'evolve' into salamander-type humans, but once back on Voyager the EMH was able to cure them of their odd affliction.
So why didn't they make the modifications to the warp core and get back to Earth at the end of the episode? The condition obviously wasn't life-threatening and could easily be reversed--which the EMH could do the moment they dropped out of warp in the Sol System seeing as he wouldn't be affected by the process.
So why not go ahead and do it then put up with the bizarre side effects for a few days?
Congratualtions you've just ended the show. That was one of the many problems with this episode they were fully able to get home and any minor side effects of the trip could be reversed.
On the continent of wild endeavour in the mountains of solace and solitude there stood the citadel of the time lords, the oldest and most mighty race in the universe looking down on the galaxies below sworn never to interfere only to watch.