By the way, never recorded or seen myself bench before. Would appreciate any tips on my form. I know you're supposed to have a diagonal bar path but I didn't realise I lowered the bar that much, it doesn't feel like I'm bringing it that far down but in the clip looks almost like I'm bringing it to the bottom of my rib cage... maybe it's just the angle.
I don't leg drive, and maybe I'm completely wrong on this but the way I see it: leg drive will help you if your goal is to lift the heaviest bench press you can. For me that's not my goal, my goal is to build strength in my upper body (chest/shoulders/arms). As I understand it, leg drive will help get the bar off your chest and more or less do the first 10% of the press for you. If my goal was to get the highest single 1rm on bench I possibly could I would work on that technique. But as my goal is to build strength in my chest, I don't see how using leg drive would help me here. I'm never going to be a competitive powerlifter. I'm more interested in: getting stronger and not getting injured.
Completely aware that my thinking here could be completely wrong so I'm open to peoples opinions.