Mass levelling up is best done in lottery season, the reason for this is that the many wanted mats for levelling are often part of boxes alongside embers, QP, and skill gems of all 3 types. People, or well, the “serious” players (that aren’t rainbow appling) generally save their apples throughout the year to go ham here, and on other farming heavy events, like the Apoc raids that just passed (very good for a earning a variety of mats).
My own strategy towards levelling my roster completely back when I didn’t have everyone levelled was thus:
Get every possible mat from places like event shops, drops via quests, missions, ladders, etc. and just stock up on them while saving my apples, hit the lottos, farm 150+ boxes, level everyone as you open the boxes, make a skill priority order, follow through.
I have a fully levelled roster since Santa Quetz’s event, most servants I get I level immediately unless I feel like saving them for upcoming lotto to motivate me to farm, and I have too much QP.
My priority has shifted to skilling up my whole roster, by which I mean everyone I don’t use much, cause everyone I do is already skilled up to where I want them to be.
But if that’s not the way you wanna do it, I feel like my JP’s approach may be more suited to you, gonna go question-by-question:
Initial embers to level them a little (Asc 1~2)-> Mats, they are your major gate and take the most effort and time to farm → Alternate between embers and QP as and when required.
Granted this applies when you have the roster to reliably go after Free Quest nodes for mats, else, embers → rest.
My criteria:
Favourites → Gameplay interests → Whose mats I have on hand → Class I’m lacking in → rest
Depends on if I need sq or not at that moment. Tbh, you’ll have to do them all eventually, they give out sq at minimum which is always good to have more of. If they are attached to buffs, they should get priority.
If you hit the lottos, do your event stuff, MPs aren’t gonna be something you’ll lack tbh.
But if this is a question: EXP → MPs, unless your roster’s fully raised.
Absolutely. Skills are an integral part of gameplay, they can make or break your run. In fact sometimes skills may take priority over levelling, even putting E-sports aside.