The finale, while a bit surprising, was a happy and sad feeling for me.
-On the sad part, it showed a lot of time passing, meaning some characters and favorites passed or went away, character looks and relationships changed, and everything that made Ponyville and the world beyond it had changed and integrated into Ponyville itself, transforming it into a crossroads of sorts into the world Twilight now rules. I'm not sure how to feel about that, but this is more of a personal issue with TV shows in general than the show itself. 'Perfect' endings (or as close as can be) that peek into the future and become the present never sat well with me.
It has to do mainly with feeling that the world I knew and loved has changed so much that I don't recognize it anymore, and there are many stories that are new and just beginning while the stories of the old wrap up and fade into memory. And if I watch an ending, the memories and stories I mentally associate with a series end too, and I will not watch the show again for a long time due to knowing what happened. I'll also never get to know those untold stories simply by the series ending, and it is compounded when they wrap up most of the loose ends and basically leave it there.
I know from the Q&A of Big Jim that they left stuff open for fanfics and such (not that I ever read any mind you), but it's not the same as having a story told from the guys that wrote and animated/acted it. There's also going to be this nagging feeling that, if I do eventually re-watch MLP, having seen the entire series, I know what will inevitably happen at Season 9 Episode 26.
-On the happy part, it means I can finally put the show down and let time go by to re-experience it again sometime in the (probably distant) future to re-live the enjoyment of the series. It also frees up my time to do other things than watching a new pony episode every week, something I haven't done since Season 1 E7 'Dragonshy' aired (mind you I usually watch an episode online where I can, but the only episode I have not seen is Noir Rarity's 1st episode to this day).
Overall, this is more my error than the show's, as I know nothing good lasts forever. As an example, Fraggle Rock (a show by Jim Henson from the 80's) is one of them, as after 4 seasons, the ending wraps up all of the fantastic tales in a thoughtful and meaningful way from what I heard, yet I sorta don't want the journey to end, so I have never watched it despite owning it on disc. It's probably an attachment issue due to my childhood or something similar in terms of mental scarring or some such, as it's hard for me to accept a journey's end, especially if I enjoyed it. Personally, they could have ended it on episode 25 and that would have been fine for me
Anyway, sorry for the wall of text, but this comic reminded me of that conundrum, so I thought I would comment on that aspect of it. It goes to show that your comics inspire a lot of genuine emotions and situations along with new perspectives, some of which the show would not touch on, and I look forward to more of your work.