I've finally teetered over to T10 and I'm pretty excited, all things considered. That being said, would appreciate some help to make sure I'm working toward the right upgrades :)

Here's what my T9 set was:

I have a couple things waiting in the wings, which are: I know that these don't fully become relevant/usable till the T11, but I also have: I also also have a nabbed during Gelly War, but I get the sense it's not that useful in usual equip sets

I know that RotL is better than the Amulet of Drakkonis, but haven't found much reason yet to slam down the sP for the upgrade; might do that sometime down the road once I have some more money to swing around because rn I'm like fully broke. I know MCAB is also a pretty good pick, but not sure if it's worthwhile if I already have some pretty good T10 options to work with? I'm thinking of gradually building up enough sP for OHS, Ether, and Natasha, but that is also very verrrrry far down the pipeline haha. Also would appreciate some guidance on what to slot in weapons with more than 3 crystal slots bc I have like no idea what I'm doing.

I feel pretty good about scrolls atm too? I kinda just need to get more AP for invest in more Shrieks bc freeze makes the world go around haha. Currently have Aftershocks, 4x Shrieks, 1 GotF. I also have Cobalt and Sanct + Morosbane, as well as Triple Threat--those are generally flex picks but don't usually end up packing those. I also just earned Psycho Smasher and have Cold Blast, but am prone to get annoyed by how much they fail to freeze.

Here's what I came up with so far: Lightning has 3x crit mods, 1x parched, 1x BoNA USS (sometimes swapped for Prodigys Eye) has 1x crit, 1x parched, 1x BoNA

It sounds like you’re on the right path! In the upper tiers it’s good to have a diverse armory so you can be prepared for different opponents. But I don’t think you really need MCAB when you have Shinwas Lightning and USS.

Your main set looks great. The main thing I would consider working on is upgrading that Acorn Bomb. Captured Eternal Flame and Nachos Secret Stuff can both be won from opponents. They both scale as your pet grows so one of those might be more helpful to you.

Shrieks have an 85% freeze rate while Psycho Smasher and Cold Blast freeze 75% and 65% of the time, respectively. Strong Stomp Scroll has the same freeze rate as Shriek of Despair so I mainly keep those two in my set. I think it’s good to have a ‘non-freezing’ alternate scroll set as well for when freezing is disabled. Mine has a bunch of Colbalt Eternals and Sancturia Exodins.

For mod crystals it really depends on the opponent. If it can freeze and steal, then BoNAs. Just freeze? Parched Baguettes. I mostly keep a mix of those two on my weapons so I don’t have to change them out much :P But in the instances where freezing is disabled you can have a bit more fun and use other types of crystals like the elemental ones. It’s really up to you and what you feel you need to help you win.

Ya I agree with Jess, I think you nailed it on your own.

Looks like T10 might have changed enough in the last 6 months that I should rewrite the endgame guide sometime.