Re phab:T163685 and since I was asked there to provide feedback on this feature here:
I think in the current version it just looks like an example of software bloat. Sure, ability to move through diffs with AJAX is a lot better than the current way for the most editors, I will not dispute that. But the whole premise of RevisionSlider is wrong for one very major reason: this is not normal, the fact that the previous revision is +23 and it is almost half the height of the +984 one is not normal.
The bars don’t represent any real information in any shape or form, the graph isn’t showing anything, therefore it should’ve not been done in the first place. Developers could’ve just made an insert of history page and a scroll in that exact space and it would’ve not been such a mental disaster as parsing this thing through.
(I am not going to excite a riot or anything in my local community about turning this feature on by default, but it is really a sad state of affairs that communities are being notified about the future change in 1 day timeframe. Consider this my last comment on the situation, I am really disappointed with WMDE developers conduct and replies [such as repeating question ‘Did you care and provide feedback?’ over and over again as if we had any timeframe for turning it on by default], even if my messages might’ve come across as angry at IRC.)