Create a recording view

I tried to record a playback of a score, but the spacing between systems and the scrolling behavior of the "Publish" tab drives me nuts.

1) The playback line skips from the end of a bar to the first note of the next bar. Why can't it smoothly transition from the previous note to the next, just like within a bar?
2) When starting the playback, the playback line shortly pops up at the last position before it is drawn in the correct position (should be positioned correctly first, then be made visible, not the other way round)
3) The "Space" shortcut to playback doesn't do anything for me.
4) In default style, systems might be so close together that the playback line overlaps with the notation from the systems above and below.
5) When the next system isn't entirely in view, the page auto-scrolls. However, where that system ends up is entirely random. Sometimes it scrolls just enough so that the next system is basically bottom-aligned to the viewport. Sometimes it scroll it to the top. Sometimes center of viewport. Sometimes it scrolls them so far or not for enough that the annotations above or below are cut off by the viewport border.

PLEASE create a "recording" view that makes recording easy by placing the systems in the same spot upon scrolling. Also make the playback line transition smoothly from one bar to the next.

Thank you.