>>536472741
here's the current state of the game modes
>story content / open world exploration
>daily content (energy grinds, low intensity HZ runs)
you can clear it with anything. if struggling as f2p, use piper+lucy
>high intensity HZ runs
you can clear it with trial S ranks
>Shiyu(piller)Defence
>DeadlyAssult
both SD and DA need 2 teams to get the max poly rewards. SD needs S rank clears and DA needs 6 stars (technically 5, since any random build can get 1 star on the 3rd fight)
i don't know what the lowest investment is to clear those. but 2 S agents with 2 S balls and 1 A agent and 1 A ball per team should be more than enough to clear them comfortably
there is something to be said about going wide, as new banners tend to be power creeps, and the enemy HP creep could leave you behind on some rewards, but we also get free S agents occasionally, free A balls, etc etc, so it's not likely to be an issue any time soon
>endless tower
this is the biggest factor for deep investment, as it's the main score based endgame content
to clear it for max poly, you just have to not get hit, so technically you can clear with anyone
though recently they added a timer, which cucks many A rank agents. if you have the above mentioned 2 teams, you'll be fine
but if you wanted to keep pushing for pointlessly being ranked top 1% on your server, then yeah, invest deep
though, keep in mind that because of this game mode works, some characters are better than others. in pericular when it comes to healing. shifu's "healing" is really good here, vivian's invincibility frames too, astra and caesar's healing and shield should also be decent. but you can only bring 3 characters at a time, my point is some agents are better than others to deep invest here
you can technically bring up to 9 agents on endless tower, but again, it's "endless", you're not supposed to lose anyone. it should be considered just a help with a certain element or boss
TL;DR: roll for whoever you like