After a little research it seems like not a whole lot has changed with the Champion skill trees, and I was able to find a late 2018 build guide that showed the same skills in the same order, and what to take for best effect if building an AoE Solo Champ (which mine is). I just sank the majority of my points into the Yellow tree skills this time, skipping a couple of useless ones, whereas last time I think I may have taken a couple of additional Blue and Red skills on the path up, but can’t recall ever using any of them besides the Blue one that restores your power in exchange for fervor (Second Wind) and the Red one that gives you three attacks early on (Brutal Strikes).
Since I also somehow had the intro movie play when I first logged in, I suspect that activating the 64-bit client may have “reset” something, and that’s why I had to respec despite having only been away for a few months. I really wish the UI would leave all the skill icons in place from before, and just shadow them out or something, so that you could at least see the skill tree skills you had taken previously and try to recreate what was working for you.
Ah well, I will get into a few easy fights to relearn the rhythm of my skills, tweak whatever is needed, and then it’s back to Moria to finally finish the last couple of zones in there.