Thanks for sharing them. 
I gave them a spin. They’re nice color modification filters. Though the placement of the Preset option for both is weird as they are off to the left and they both have the unnecessary scroll bar. Also they are both affected by Bug #10 on my V19.02.28 Bug Report .
I also hope I don’t sound like a broken record asking about keyframeable effects. 
Only reason I do is because Dan said that some effects are not possible to add keyframes to so if any of them are it’d be a good idea to have that in mind so that at some point during testing them out the keyframes could also be tested so the filters can be fully functional when they officially debut in a release.
Yeah I noticed that in the picture you posted. That has me interested in the kind of effects that can be pulled off in keyframes with this. I’m wondering if Sync Loss could be used to do a flip roll/rolling transition effect. Also, is there a parameter that could be given to Sync Loss that would allow left and right movement?
Minor point: “Effect” can be dropped from the names of the filters as none of the others have that in their names.
Did you have to use Rotate and Scale to make Sync Loss work better or did you add Rotate and Scale just to mimic the full frame aspect ratio that most movies on VHS had?
Thanks. I’ll probably make some more versions with the addition of the new filters to explore what else can be done.
I did come across some more issues and bugs in Shotcut while making this so I guess my current Bug Report is going to get a little bigger.