Absent from your assessment, one main criticism I hear from outside people is how the voting system of Steem is currently rigged in many ways. Shamefully, I cannot disagree.
If a fork happens, that reputation will grow and it will need to be healed.
I think a community fork will address this issue of fairness better than the Tron/Steemit fork (maybe I'm wrong).
Top down approach (Tron/Steemit) vs Grassroots approach (community). Hard to say which is better.
RE: What happens after a Chain Split?