What are the biggest issues with the game in your opinion?

Honestly, there is a lot that isn't right in this game. And the more it goes on, the more it becomes blatantly clear. It does a really poor job explaining stuff to new players, only teaching them the basics of the basics. And since the matchmaking, after all these tries and changes, still doesn't work properly, new players are likely to be demolished.

The killers, who sweat in each and every single game they play. They play as if getting a 4k is the only thing that matters in their lives (and for many people that is probably true). They use crutch things, abuse everything they can to have the game be fun ONLY for them, tunnel everyone to death, camp. On a design level, they have too much spam freedom. Look at Clown, look at Deathslinger (yeah, I know about the patch notes), look at all those who will only ever hit you with instadowns, without even trying basic attacks.

The survivors, who can sweat in much the same way as the killer. Although, in my experience, killers do it much, much more. The only sweaty survivors you have are those who never play the game outside of SWF, because they know they would suck otherwise. And they too abuse a flawed game design.

The toxicity that reigns supreme in this community is pretty evident, too. And I say that as a League of Legends player. People say there ain't a community more toxic than that. I dare them to come onto this game.

The developers, who have no idea of what they are doing, most of the time. It's evident they almost never bother playing their own game and, when they do, they do so on Rank 20 and the likes of it, having no real idea of how the game works. Also, they have long given up on console optimization, but never admitted it. And, on the developer side, greed. Because if I know something about videogame developers, is that they tend to try to find a way to work less, while earning the same or more. Just look at what we're having now. Just a single new map (and only because it was licensed), a killer and a survivor coming out in the same month, WITHOUT being part of the same DLC pack. So it's 5 bucks for one, and 5 bucks for another one. 2 bucks more than the usual chapter price. Yes, Mikaela will be purchasable with shards. But if you waste shards on her, you will then have to use money if you want a skin that you could have gotten for free (unless it was Cells only). It's becoming just like what Ubisoft did with R6 Siege. The Season Pass is sold for the same price, but it gives you no new maps, no new weapons, and half the content it did before. As I said, decreased content, for an increased price.