Eva is a decidedly mediocre collab. While Rei Myr and Kaworu Kali are exciting cards, the rest of the REM doesn’t merit the financial investment to acquire them. This is usually the case for most special REMs, but the lack of value at 5- and 4-star rarities is a major concern. This problem is exacerbated by the recent reveal of the Weapon 2 series who basically invalidate the usefulness of Unit-13, one of the few cards in this REM that hardcore farmers would have otherwise chased. I do give credit to GungHo for giving new life to what was once one of the worst collabs to hit NA, but it just isn’t enough to recommend rolling. Perhaps Bleach has spoiled me that much.
For those looking for some roll rates, I found this page. At about 1% each, the rates for Rei Myr and Kaworu Kali are on the lower end of a typical collab REM which usually has its highest rarity cards at 1-2+% each.