I'm glad you like it, m'Lord. It's a fun game both as multiplayer and solo. I agree that the constellation stuff is way overwhelming, with so many options. For anyone who cares, you find the occasional ruined or desecrated shrine that, if you restore, will give you points for devotion towards major and minor deities. I stuck with the low-total-point ones to easily max on the rewards each point gives, but haven't played the game enough to try any other strategy.
I hear you, too, about weapons. More often than not, it isn't the highest-level ones that are the most useful. My advice is not to overthink trying to choose exactly the right stuff because you will invariably find something better later on. Plus, keep items that work on different elements (fire, lightning, aether, acid/poison), especially for resistance, to switch to when you encounter a boss that uses these attacks. Make good use of your stash space.