Yeah the one thing I'll say about FGO is that at least powering up characters isn't absurd. You only need to get a character six times to fully power their Noble Phantasm (special attack), and with some of the rarer characters like Arthur or Mary Reed & Anne Bonny it's really not necessary because their attacks are so powerful without being boosted. But even then some of the lower ranked characters like Cu Chulainn are common enough that while they don't start out great once you boost his NP a couple times he becomes a monster of a character. And while I hate that you can't level them up by grinding battles and have to use essences as the only way to power them up, it's not hard to do so since they have EXP, money, and item events literally every day of the week. You just gotta make sure you pick the right day of the week for whatever class you want to power up.