As far downhill Mileven went starting out this season, I still ship it.
Yeah, they both need time to grow. But I feel like they're better doing it together.
El needs words to know she is loved. That could be why Hopper's yelling in S2 made her so upset. After her life in the lab, she needs to hear that she's loved and cared about.
Mike's parents don't have a good relationship. His parents don't really show any love to eachother, which is probably why he has such a hard time expressing it. Eleven needs constant affirmation, which is not Mike's specialty.
Overall, yeah. Great ship and not always sunshine and rainbows. It's realistic and that's good.
Also Mike is not good enough for Will.