I'm sure there are ideas, but it takes years to develop. Steemit Inc spent most of 2017 and 2018 focusing on scalability, which is why there were no major updates in the last 2 years. A hardfork with major protocol updates used to be every 3 months before, then it stopped while they focused on a broad range of scalability solutions - RocksDB, RC, MIRA etc. Scalability always comes before adoption, this is absolutely not a "chicken & egg" problem.
And to what end? Reddit, Twitter, Medium etc can already handle a million times greater activity. Why even bother? I wrote about this before: https://steemit.com/blockchain/@liberosist/why-blockchain-social