I think we just need a whole new revamp of the HIGHLIGHT feature & tools. It all needs to be modernized in my opinion, everything about it just seems so pre-2010-ish (Meanwhile the clip editing feature, on the other hand, already felt more modern than the highlight feature & now it's even smoother with the update; although that could use a few tweaks as well)

I use the highlight feature a lot because I like to highlight all the good moments of my 2-3hr stream in one 5-25min video (sometimes two if I do longer streams). When I select all the segments that I want to highlight, the playback looks decent while watching via "Preview all segments" button. After processing is complete, the published version of the video doesn't play the same as the preview since it'll start skipping parts in the general vicinity of the parts I selected. Very frustrating when I spend 1-2+hrs highlighting the segments of the stream I want, only for it to not even work (even though it appeared as if it did). I 100% am wasting my time with that & won't be using it for that until fixed. I would like to see changes made because the highlights I make could be so good & convenient to me if it worked properly.

Side note, if feature is completely revamped, I'd like to note what I love/hate about the current version:

Love:
-The zoom feature for the entire timeline (would like to see more range options such as 5 or 10min, etc.)
-being able to watch playback between 0.25x speed & 2x (would love to be able to sometimes watch in 3x or 5x, etc.)
-the ease of use w/keyboard shortcuts (definitely use these a lot, especially for playback speed, pause/play/forward/back, and timeline zoom)
-seeing where on the timeline something was previously clipped or stream marker was dropped (although sometimes the placement isn't exactly precise)
-'Preview all segments' button (definitely love this button the most, use this a lot to see how all segments mesh together & see what adjustments I need to make. Just need it to work properly when highlight is published.; 'Preview selected segment' is a very useful button also; would like to see an additional option like 'preview all segments from current segment' or something like that so I don't have to watch from the beginning every time or skip to that part)
-'Undo' & 'Redo' buttons (very useful for obvious reasons)

Hate:
-That segments can only begin/end every full second rather than any millisecond (sometimes I like to begin/end a segment based on sound or the visual so it goes smoothly w/the next/last but have to wait for the next full second. That usually adds/cuts parts of the video I didn't intend to add/cut out. I have tried dragging the segment bar to counter that but haven't seen any difference in the published version. Would like to see the highlight timeline look & act the way the new clip timeline feature does, or better. Clipping is definitely smoother now, highlights gotta catch up.)
-That I have to separate segments from each other by 6+ seconds or else the post-processed video will bug out & freeze / not play properly until I press play again
-Not knowing how many segments/splits I can make (there was a time or two I did make more than I probably should have & it never finished processing to this day. I spent a ton of time on that so definitely lost time & that whole stream/highlight in general. That one hurt since I finally got my chance to play with someone famous & wanted to keep it as a highlight but lost it all & pretty sure it was because I made too many cuts. Very unfortunate)
-When I play a game that shows the 'Intended for certain audiences' banner (this isn't a big issue but gets in the way visually when trying to create highlight; am able to get rid of it though by dragging last segment to the very end & pressing 'undo')

Have not used at all or much at all:
-Adding New Highlight (using multiple highlights; usually do them separately)

Would be cool to see:
-Autosave feature or ability to save edit progress manually so I can exit & not have to wait until I have time to do it all at once. Also in case something goes wrong (connection issues, crashing, etc. Whatever it may be)
-Ability to highlight pieces of different broadcasts/VODs (this would be nice to create true 'highlights' of what a streamer provides. Could also make a good channel trailer from that, possibly.)
-Notification alerts for followers when highlights are published. Or even a home page tab for created highlights like there is for clips
-Likes & comments on published highlights from followers & even non-followers. Could help add further discoverability.
-Additional 'Preview all segments from current segment' button
-Ability to speed up / slow down segments from 0.25x on up to like 10x if possible

I understand that this all may not be a large of percentage of people that use Highlights like I like to but would love to some, if not all, changes made. I love Twitch & this would definitely improve my experience with it. I appreciate it all in advance!