Genuine question - Where do you get your update concepts? Where do you keep getting these ideas about "what tumblr users want" with regard to the use and functionality of this website?
Because for true and for serious, whoever is giving you these ideas, they have no idea what they're talking about.
If you're using a focus group, get a new one. If you're using a consultant, fire them. If you're looking at other social media sites and using that as a template, STOP.
The entire charm of tumblr is that it is NOT like other websites. We like it the way it is. We've built a home and a culture and a community that's lasted for over 20 years now, which is more than most other text-based social media sites from the 2010s can say.
If you want ideas on how to improve the site, ASK ACTUAL TUMBLR USERS. They'll tell you things like :
improve the search function
improve user support and problem reporting
improve account filters to weed out pornbots and spam accounts
do something about the repetitive dashboard ads so that blocking them actually works
use human-intelligence review to prevent hate-reporting against marginalized users and needless deletion of their accounts
do better with removing hate groups and hate content from the site
Or, if you want something else to do, fix the mobile app. Half the time, it doesn't work at all.
It's weird here. It's unconventional. It's nerdy and niche and hard to pin down. And that's kind of the point.
We love our big blue hellsite.