**System Information**
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 457.30
It is a "know issue" that, when it was decided to implement Filmic as default View Transform, it would break the color output of the VSE, but this is not the only downside of it. A 2.50 minute VSE edit took me a staggering 26 minutes to render with Filmic on, and 6 minutes with it off.
An often heard argument is that the VSE template sets it to "Standard" as default and that should solve the problem, but how many users actually open the VSE in a way which will not give them the "Standard" View Transform?
Out of 88 votes 68.1% are opening the VSE in ways which will not give them the "Standard" View Transform:
{F9894470,size=full}
https://twitter.com/tintwotin/status/1370077312083955715
It was explained to me by @rjg that this problem has been solved by documentation. But doing a search on "Filmic" in the manual results in two hits, and none of them describes that VSE users must change the View Transform setting to Standard themselves: https://docs.blender.org/manual/en/latest/search.html?q=filmic
On stack exchange there are 19 topics on the VSE and filmic, mostly concerning the problems caused by it: https://blender.stackexchange.com/search?q=%5Bvideo-sequence-editor%5D+filmic
This doesn't solve the problem either, since 58.7% out of 46 votes do not set the View Transform to "Standard",
when outputting from the VSE. Either because they do not know about it(37%) or they don't for unknown reasons(21.7%):
{F9894476, size=full}
https://twitter.com/tintwotin/status/1371365685775962112
(It should be mentioned here, that most of my followers on Twitter are hardcore VSE users, so those number will look quite different if casual users were asked.)
So it is fair to say that this default setting is seriously damaging the user experience of the Video Sequence Editor, and should by all means be dealt with as a most urgent bug and regression.