I’ve tried Mlem and Memmy, and the biggest features missing as I see it are:
Once you have logged in, search all currently federated servers. See what their subscriber count is on their local instance, and across all instances. Sort by subscribers, posts/day, or comments/day.
A tab which shows you your subscribed communities so you can go straight to them (Memmy and kbin both make you go in to your profile to do this, it should be front-and-center)
Ability to subscribe to a community by looking at its main page
Ideally kbin communities would show alongside lemmy communities, I think this is a limitation of kbin right now though?
Swipe posts to upvote/downvote (right), reply/save (left)
Something which tells you the last time information was pulled from a federated server - sometimes it would be useful to know that I might be seeing a page which is 8 hours out of date vs. one which was updated 30sec ago
Something which tells you or prevents you from posting to a defederated community since the post will not behave as expected
Expose options for copying links to comments, links to parent comments
Ability to see your post history separated by threads/comments/etc., and messages; from a comment, go to the specific thread in question (i.e. direct link to parent or contextual comments in that thread, not just the original post)
Hide posts you’ve voted on already
I don’t think any currently existing apps expose moderator tools. I’m not sure how much of this is present on the API side so far but will be hugely important as communities get bigger.
Content density. On Apollo I can see ~6 posts at once on any given page. On Memmy or Mlem I see ~2.5. Just a much more efficient display of content, tell me what the post title is, what community+server it’s on, how old the post is, how many comments, what the upvote-downvote calculus is. If I want to know the user count or read the blurb on the post I can tap in to it.
Graphical fidelity has not materially improved since the days of Crysis 1, 16 years ago. The only two meaningful changes for how difficult games should be to run in that time are that 1440p & 2160p have become more common, and raytracing. But consoles being content to run at dynamic resolutions and 30fps combined with tools developed to make raytracting palatable (DLSS) have made developers complacent to have their games run like absolute garbage even on mid spec hardware that should have no trouble running 1080p/60fps.
Destiny 2 was famously well optimized at launch. I was running an easy 1440p/120fps in pretty much all scenarios maxed out on a 1080 Ti. The more new zones come out, the worse performance seems to be in each, even though I now have a 3090.
I am loving BG3 but the entire city in act 3 can barely run 40fps on a 3090, and it is not an especially gorgeous looking game. The only thing I can really imagine is that maxed out the character models and armor models do look quite nice. But a lot of environment art is extremely low-poly. I should not have to turn on DLSS to get playable framerates in a game like this with a Titan class card.
Nvidia and AMD just keep cranking the power on the cards, they’re now 3+ slot behemoths to deal with all the heat, which also means cranking the price. They also seem to think 30fps is acceptable, which it just… is not. Especially not in first person games.