>>723191276
>>723191471
See: >>723196908

If you get put in Group B, you're getting worse rewards for far, far, far more effort than it you'd queued Open. I've got friends who spent more than 50 runs building their Umas, they were proud of them, and they've been slaughtered by Whales and autists willing to high roll beyond reason.

Open League means

>No need to high roll stats
>No need to pray for aptitude inspirations
>No need for some extremely unlikely combination of skills
>No need to also somehow manage a pile of optional races in the career to have SP to buy them

I used a spreadsheet calculator someone else had created to make myself a build that fit within B-Rank limits, and I built 3 Umas in one night, then went 18-2 and 19-1 in the first round. I then did 2 more runs to get a marginally better build for one of my Umas and smashed the second round.

If you're not the kinda guy who can clear 5-0 Graded Group A, then save yourself the pain and the hassle and queue Open.