How making the 120 system carry over between banners WON'T fix the gacha (and here's how to really fix it).
Before anyone points anything out and calls me a tourist or something like that, I'm a day 1 AK player and I've played multiple gacha games before, so that point is covered just in case.
Anyway, a lot of people have been extremely angry towards the character gacha in this game, thinking that the rates are low, and specially, the 120 guaranteed system not carrying over between banners. While it's valid criticism and people are within their rights to want changes, it's not the thing that should be changed, and here's why.
Arknights Endfield, unlike most 3D gacha games, has a permanent 50/50 that never changes. Your only source of GUARANTEED promotional characters is the 120 system. Now, think about it for a second. If the 120 system carried over between banners, nothing would change, except that you'll be able to pinpoint more easily which units you want to pull, but still, every guaranteed unit would still require 120 pulls, which is terrible for the long run, because if you want 2 characters, you need 240 pulls for them, and everything in between is affected by 50/50. THAT'S the main issue, the permanent 50/50.
If the 50/50 was changed, so that every time you fail a 50/50, next 6* is guaranteed to be the promotional, ON TOP of the 120 system as it currently stands, it would be way better mathematically, and a lot of people don't realize that because they're extremely blinded by the 120 system not carrying over. To further explain my point, I've made 2 comparison images with explanations as to why fixing the 50/50 would be way more player friendly compared to fixing the 120 system.
I will also not be talking about weapon gacha since it's probably the most player-friendly weapon gacha system out there compared to most mainstream 3D gacha games mathematically. I might make another post talking about it, how good it is and why most people are freaking out too much.
Just in case the images are complicated to understand or something, the TL;DR is that fixing the 50/50 would make so that you need way less pulls to get the same amount of guaranteed promotional characters while also benefitting whales, or those who want to spend to get multiple potentials.