Would a dead hang arm (pendulum stroke) work better/more consistent? I think it probably would, and I imagine you probably have to shoot pretty frequently to stay in stroke the way you're stroking now. Without seeing more from you it's hard to judge. Seems to work okay for you on this rack, you got the shape you wanted and got out pretty well. As far as follow through goes, I saw small/short follow through on every stroke, certainly "enough" in terms of acceleration. The couple of shots that looked to decelerate could have been because of your grip; you also looked to be steering or swiping a little bit on a couple of shots, but you got away with it.
If you feel compelled to adjust your stroke, go ahead; but be ready for some growing pains...I spent over a year working on my stroke, glad I did, but man did it frustrate me for a long while! I used to have a Bustamante style buggy whip stroke that served me well for decades; but after a long lay off I couldn't consistently get out...I worked hard and changed to a straight pendulum stroke with no floppy wrist and it paid off. But it took a lot of work. It was months before I could get the action back in my cue ball, seemed like I completely forgot how to draw a ball. Now it's all good. I agree with the other posters, if you really want to change your stroke, you should invest in a couple of lessons; it will save you months of aimless experimentation where you can't see yourself clearly...