Wow, thanks for the responses, very helpful. With that in mind, here's a few things I've been wondering about with Doc if anybody could answer.
1. Does D Tilt have a use? I use it very occasionaly at higher percentages to mess up DI, but is there anything past that?
2. Is dash attack better for anything then a mixup? I realise it has punishable cooldown but everytime I hit it seems to get the perfect trajectory to punish HARD.
3. Has edge cancel aerials been utilised to any purposeful extent with Doc?
4. This might sound a general question but I'm having trouble simply comboing with Doc on some characters. I know this is a universal problem against, like Samus and Jigglypuff, but I myself feel like my Doc is playing freaking Barwl against a lot of characters that other people don't seem to have trouble stringing, like the Marios, Luigi, Mewtwo, YL etc. Is this something that will simply fix itself with time or is there stuff you would recommend consciously implementing?