Another super ascension for me and I figure it's a good time to take stock. A helpful tracking chart and some thoughts below!
https://i.imgur.com/CrkPSr4.png1. I'm behind my 6-SAsc peers on artifacts. I think this really boils down to two things. First, I have deprioritized the Time Warp artifact (especially during the critical pre-patch period). Second, I have deprioritized time spent in Phase 4 (when dig speed is doubled), instead opting to pay 150 coins and super-ascend as soon as I hit 134k AP.
2. I've been very regimented in sticking to my plan to gain exactly one or exactly two legendary artifacts per SASc, following a cycle of 0->1->2->3->0 legendaries and adding an artifact slot or +25% AP as appropriate. I think this cycle makes a lot of sense for "high" activity players but may make less sense for "medium" or "very high" activity players. I've also been intentional to temporarily upgrade to a Legendary Time Warp artifact for cycles where I will gain 2 legendaries and then drop back to Epic Time Warp for cycles where I will gain 1 legendary.
3. I do ultimately believe Insane Alloy Values is overkill and Legendary is probably sufficient for most players. As I have mentioned previously, my current thinking is that Alloy Values should be the first Legendary artifact but I would probably prioritize #1 Army Cache Boost, #2 Cache Boost and #3 Time Warp as the first Insane artifacts if I were to do it again.