I would have been OK with the ending except that Janeway gave a beep about the timeline. And for what? To save Seven of Nine at the expense of millions of lives.
I found that this was irresponsible behaviour on her side. It would have been irresponsible to do so even if she had wanted to save an entire planet. Like she did in CARETAKER. But there, at least she didn't have to wipe away the potential existence of millions/billlions/trillions of people in order to do so. In ENDGAME I thought that this was not typical of Janeway because she had usually taken sides in conflicts during the journey earlier and had constantly kept trying to protect the innocent.
Here on her last adventure, as if old age had taken its toll on her she became obsessed with getting her crew home to the extent that she didn't even care about other people any more. She was not like that during the rest of the show.
So no matter how different the ending would have been from what it is now, it should have beeen done with regard to the existence of (billions of) innocent people.
Otherwise I found the ending OK. In contrast to most people I wasn't bothered by the fact that they didn't reach Earth and were not greeted by Starfleet at a welcoming ceremony. This, at least gave us Christie Golden's HOMECOMING - God bless her for that book.

BTW, if I had been director of that show, I would have brought Kes and the Caretaker (male or female or both) back somehow and included them in the last episode. If Janeway was that adamant that her crew should not come back to Earth without Seven, then perhaps she could have been at least as much adamant that Kes and Neelix - not to mention minor characters like Carey and Hogan, etc. - should also be brought back home.
As a director I would have tied the story more to what was going on at Starfleet HQ and would have included Deanna Troi as well. She worked so well with Barclay and Paris (admiral) - I'd love to have seen her in the last episode.
However, one good thing did come out of ENDGAME: Kirsten Beyer's lovely book, THE ETERNAL TIDE. I thought it was a fascinating read, mainly because Janeway is confronted in it with the consequences of her actions in ENDGAME.
No matter how flawed one thinks ENDGAME is, it seems that the relaunch writers are doing their best to correct the errors in that story. Kudos to them!
