A timely review for once. I hopped onto the Wuthering Waves train at launch, and I've been playing it a good few hours every day since. I wouldn't normally be so eager to try a new game, but you know how it is with gacha / live service games - every day you're not there, you're falling behind on the curve. Being forced to play daily is a sad thing for any game, but the live service model has proven very successful, so it seems here to stay.
If you want to stop reading early, then all you need to know is that Wuthering Waves is literally the same as Genshin Impact. It can in no way be said they just took inspiration from it. They very blatantly copied most aspects of the game, renamed them, and reskinned them. I am honestly appalled. I do not know what they were thinking with this decision. Surely they didn't hope to just flat out beat Genshin, which is still one of the most popular games in the world, and has multiple years worth of extra development time and content. Maybe they thought people just wanted more of Genshin. That seems like the most reasonable explanation. But let me get into more details on the differences.
In case you don't know Genshin, it's an open-world action JRPG where you have a team of characters where only one is on the field at a time. The characters synergize with each other, incentivizing cycling through all of them instead of staying on your strongest one. As for the differences in Wuthering Waves... On the gacha front, it's almost a 1:1 copy. Same for crafting and leveling. Any differences are not worth mentioning. About 90% of the innovations are in the combat department. Everything else is lifted from Genshin. And honestly, I feel they did a good job with the combat - it rivals or maybe even exceeds Genshin's combat, which is quite the achievement, considering I think Genshin's combat is top-notch.
Wuthering Waves reduces the team size to 3, but each character becomes more complicated. Aside from their skill which is only limited by cooldown, and their ultimate, which is limited by cooldown and energy, each character also gets an intro and outro skill which occur when swapping characters, under the condition that the corresponding energy bar is full. Aerial combat is also slightly improved, with some characters having air attacks, and plunge attacks being possible from even just a basic jump height. There's also a larger emphasis on skill, with dodges being rewarded by a special dodge counter, and interrupting certain enemy actions via a sort of parry staggering them. More interestingly, each character gains an enhanced version of one of their existing abilities or attacks which is charged by some special mechanic unique to that character. This really sets each character apart.
If it just added onto Genshin's combat, Wuthering Waves would most certainly have superior combat, but they're missing my favorite mechanic - the elemental reactions. They do have elements, but aside from a rudimentary resistance and status effect system that you almost never think about, they amount to little more than having differently colored numbers. I'm not even sure why they added them.
I personally place a lot of focus on skill expression in combat, but the sad reality is that gacha games aren't really about that. They need to appeal to a wide audience, which includes casual mobile players. Therefore combat is mostly determined by your stats, not your skill. Sure, you can beat a significantly stronger enemy by being skilled, but the game doesn't expect you to, and the fight will just be against a damage sponge that one-shots you with any hit. In areas where it matters, you'll be on a timer, meaning even the best players won't be able to have their skill compensate for the lack of time investment into building their team.
But worse still is that these games often aren't focused on combat in the first place. Most of the content is exploring the world, collecting thousands of collectibles, and doing hundreds of quests. And this is where Wuthering Waves quickly falls behind. Their story just isn't interesting, and the English dub is terribly directed on top of that.
I'd love to tell you more details about everything, but this review is getting far too long. So, to summarize: Wuthering Waves is a carbon copy of Genshin, but with a worse story, less content, and a different-yet-possibly-better combat system. However, because skill expression doesn't matter in a game oriented towards a wide audience, I must mainly judge this game on the non-combat aspects. And based on those aspects, I find little reason to play this over Genshin. Thus, I can't really recommend it. If you want to play Genshin, go play Genshin. If you want something different, then you won't find it here.
If I had to predict, I would say Wuthering Waves is headed the way of Tower of Fantasy. The population will halve each week, until it almost settles at maybe a few percent of the popularity Genshin has. This will still earn them millions every month, so it will be enough to keep things running, but I doubt it will ever grow into something greater.