Here's the problem. Twitter has to decide whether it is A) algorithmic (facebook style, they show you content they think you'll like an optimize it by the time you are engaged with it), B) curated - someone else decides what you may like and it is suggested C) you organize it yourself.

Lots of people at Twitter are all about (C), and have ideas how to improve it. However, management has never really been hot on it, and prefers (A) because it is easier to "measure" and optimize for. If (C) was done well, and allowed users a good way to find content they though was interesting, it would be super helpful.

Another problem is that Twitter still sucks for media. Michael Sippey, then head of product, was against anything but text. He was out within a year. Text is hard to create (well), but photos are very easy- snap, apply a filter and bam, billions of food photos on Instagram. One of the appeals of Snapchat and Instagram are that they allow you to broadcast photos/video very easily. In essence, they are a better Twitter for 99% of the population.