How should I spend my rubies?

[Jesus F. C.]

I just completed reincarnation 1, and I have 3000ish rubies. I don't want to waste them, but I would like to know where it would be best allocated for long term.

[Synthar]

the first 2 things should be party slots, 10k each
after you are that far in, you probably know enough to decide between the 3. party slot and the other stuff
i would probably go for the 3. party slot or quest reward, depending how i am playing
at some point auto sacred ritual and upgrade auto eat slot become nessecary, but i would definitly rank them below the 3. party slot
improved auto devote i would probably get when i cap will gain
then, when you boost envy enough, you can grab the envy upgrades, with 1, 2 and 7 the most important ones

[Synthar]

dont buy the 200 ruby things, you can get them from chests and they arent permanent, so its a total waste of rubies until you bought everything else usefull

auto summon and auto level up slots are garbage
party template can be usefull if you are active and dont want to manually switch arund your party, but its a nice to have
shortcute slot seems not really usefull to me, you get enough via normal play and 10k is to much
similiar with shortcut template
squad slot is good later, when you have more quests to run, not a priority at the beginning i would say
cook is a nice quality of life thing, but not more
equip automataion falls into the same category, since it is easy to level equipment to the softcap
glowing mana shard+ is good to get, but it is endgame content
queue slot is also nice to have, but you get quite a few slots via playing, it isnt nessecary

[Jesus F. C.]

Thanks for your help dude!

[Faerador]

Yeah, def focus on the Party Slot character slots for the allies' passive increases. Then Quest Reward Boost. From there, I chose some QoL upgrades: Improved Auto Devote and Add Cook. Then it was a grind for all the Quest slots, one more Squad slot for questing, and the Envy Upgrades, before another endgame QoL: Glowing Mana Shard.

I actually didn't bother with Auto Sacred Ritual at all nor Upgrade Auto Eat. But I'm a more active player, so if you're not, you may want to grab those.

Def ignored the 200 Ruby temp items, Auto Summon/Level Up, the Shortcut slots and templates, Sloth templates, Queue Slots, and other QoL upgrades. At this point, I'm probs gonna buy another questing Squad Slot and maybe get the Upgrade Auto Eat along with Improved Put-in, perhaps? It's not really a crucial thing for spending rubies carefully anymore.