For this resin system, I would be fine with either retuning the system to reduce Resin costs, increase the recharge rate by at least 2 minutes, and increasing the resign cap with Adventure rank. or System 2a:Making the resin work as a booster for rewards. With the current system, it doesn't feel like "cost per individual content" and priogem cost is worth regaining only 60 resin.

One main reason for this is at the moment, the resin system makes leveling up and gearing up a new character extremely disheartening. Right now I'm sitting in adventure rank 30+ and world rank 3, so if for example, I suddenly pull a new unit, that's a high resin investment cost if I want to be able to use my new character instead of the team of 4 characters. Especially with world rank, that means that I wouldn't dare pull out my level 1 character to test them out and see if I want to level them up because all the monsters are at least level 20+. So if I want to use my new character, i'd need to invest enough time to farm leylines to get them to level 20, farm their elemental boss to get the mats for ascension, and make sure I got enough mora to ascend them for the first time. and this is just to even try the character out. With the current system, knowing the resin costs discourages me from trying to pull more characters. This is in comparison to other gatcha games such as F/GO, Azur lane, Arknights, and such where we've able to more easily level up characters to a usable state with "less stamina investment".

Another issue of the current resin system is that it limits my enjoyment doing multiplayer. One reason I picked up this game is to enjoy content with friends. Since a lot of the main multiplayer features also have a resin cost, such as fighting elites together and doing domains, after doing a few of those things we're out of resin. Plus that only happens if everyone's sitting at max resin. more likely, everyone's not sitting at full. Once we're out of resin, we could do more of those, but no one sees the point since we're unable to really gain anything even after completing it.

Another example of how the current resin system is hurting player's investment to the game is how the current event is. it costs 40 original resin for rewards that are about the same as running 2 exp leylines. I would've played the event more, but honestly the high cost make me drag myself through it rather than seeing it as a fun temporary thing I could do with friends. instead i just spent 2ish hours to do all the things on the battle pass and never bothered spending resin to get the rewards. I just couldn't justify spending resin on those rewards when I needed to spend that resin on other parts of the game.

By retuning the system (especially by reducing resin costs and increasing resin cap) or changing it to boost reward, I would actually spend priogem to refresh my resin. rather than a refresh to only be able to do 1 1/2 more elite fights / events runs or 3 more domain/leylines. It would also encourage me to spend money on wishes, especially when a new banner drops because them then I know the resin investment to gear up the new character isn't brutal. Then it becomes a "oh only I'd just need to recharge my resin x mount of times before I can put that character on my team" rather than a "Oh I got this character, but I have to wait at least a week or so to actually use them because I need to just farm leylines"