I have a lot to say, but most all of it is spoilers. I am VERY glad that I was not at all spoiled for the main story arc, because watching it all unfold for the players as well as myself was a huge aspect of my enjoyment. So putting a spoiler cut here.
( Spoilers through the finale. )
It'll be interesting to see how things change when they start playing their new games next month. I expect that I'll enjoy whatever the Critical Role gang gets up to next, in large part because I've already seen them do other things with their various one-shots, so I feel confident that my attachment is as much to the players (and especially the DM) as to the specific team of Vox Machina. I haven't gotten the opportunity to know the McElroys quite as well yet, so I'm not sure whether the changes will take with me, especially if someone else is GMing. But I'll certainly stick with it, at least for now. I look forward to discovering what direction the boys go.