Sounds like you need to curate your communities a bit more so your subscribed list works better for you. The memes on the front page are part of the organic growth of the site but there are tons of smaller communities with good stuff here that you can fill your front page with.
The number of posts and users is skyrocketing but we’re not reddit yet, we don’t have all the niche subs with 100,000 subscribing lurkers to drive visibility. If you’re missing an experience then it’s up to you to try to create it by posting what you want to see.