Matt D'Aquino has some good BJJ applicable stuff out there already aside from the set linked above especially around leg grabs and Kouchi Makikomi.
I'm a bit torn on this one, i can seem the appeal of somebody applying this type of structured breakdown to takedowns for BJJ but just don't think Danaher is the right person. The issue i have with this type of stuff is it's either Judo/Wrestling guys teaching stuff out of context with a token nod to the different ruleset or BJJ guys without takedown skills teaching techniques that will fail badly against resisting opponents (or worse get you hurt) because they haven't got the practical skill to apply it.
My thoughts are the approach is backwards to an extent. I have a few sequences i teach people to hit a mix of takedowns and guard pulls to immediate sweeps or subs off specific grips and i teach them grip fighting techniques to get those grips while defending takedowns and guard pulls. I'm not trying to do a takedown (for BJJ) but like in Judo i'm trying to win the grip fight to get dominant grips to get off my practised techniques while you get nothing going. They may be takedowns, they may be guard pulls but ideally they give me an option for both that leads directly in to a submission or at least something like a pass, Side Control or the back rather than 'here is how to do a version of Tai Otoshi so somebody can't jump on your back..." etc.
The Takedown isn't the focus, it's more like saying you're talking about a guard in the BJJ context. I put my left hand here, i hold this with my right hand and my legs do this and this so i have a logical progression to this sweep, that sweep, the triangle, the armbar etc. Call it a guard, call it a takedown but the idea is it leads you to a clear set of likely sweeps, subs or passes you have drilled and you're directing the flow to through your grips.
Teach the Collar Drag but teach how to get and defend that grip, how to shut them down and how to use it to get a single, their back or pull in to a specific guard. Just another example if i know this ankle lock is available then i can learn grip fighting to set up what is essentially a throw/guard pull/sub entry/oppurtunity to sweep and come up based on whatever happens as we go down:
That is the methodology people should be working to i think for BJJ not the idea of 'this is a BJJ takedown...we've copied from Judo or Wrestling but changed a little". I'm pretty sure i had a good discussion in the past on the link between ankle picks, singles and other leg-based takedowns in to leg locks as a future area for growth here with a few people but there is certainly a lot more you could teach people in a more systemic fashion such as takedowns that set up your Long Step Pass, Saddle Entry etc. I think if you teach people a clear sequence from grip fighting through takedown or guard pull depending on the result to sweep, pass or sub you're using a framework people are familiar and comfortable with from learning guards which are essentially the same thing. Teach them a throw, a double leg or whatever in isolation and even if you're saying things like "Don't stick your head here when you shoot!" you're not giving people the skills they actually need.
I've had a few beers though so am likely talking shite and this is rambling nonsense