@JPCross, welcome to the StrongFirst forum.
I think the DDD makes an excellent change of pace. I'm a competitive deadlifter, raw and no belt, in the old, skinny guy class - USAPL, 66 kg, most recent meets in 60-64 and recently turned 65, max 2.5 x bodyweight.
The article explains that the program is designed to co-exist nicely with other training and I think it does that really well. I'd read the article ...
This plan will outline how you can overcome a plateau and keep building your lifts using the deadlift as an example. I call it the Daily Dose Deadlift Plan.
www.strongfirst.com
... carefully again. It mentions that the author considers it a plateau-buster kind of program. My personal experience is that it works great for a cycle or two but I found it getting a little stale for me after that.
It does say to "use some specific variety along the way," but I'd be careful about using too much of it. One of the benefits of frequent lifting is really grooving a specific pattern.
Your idea of waving the volume seems, to me at first glance, not something I'd want to do, but maybe it will work for you. My change to the program was to add one more recovery day (I attribute this to age) but otherwise to do it exactly was written. The program calls for lifting 5 out of every 7 days - I changed that to 5 out of every 8 days by making my lifting days 2-on, 1-off, 2-on, 2-off. Derek (the author) says, "You can lift any five days as long as they are within a seven-day week," but mine was five days out of eight, so I marked it all out on a calendar for myself, working backwards from a planned max attempt.
So, by-the-book, you might start like this:
Mo/Tu/Wed/Thu/Fr @ 75%
Sat/Sun - off
Mo @ 75%, Tu @ 80%
Start next "week" on Wed
Mine was:
Mo/Tu @ 75%, Wed off, Thu/Fri @75%
Sat/Sun - off
Mo/Tu @ 75%, Wed off, Thu @ 80%
Start next "week" on Fri
Hope this is helpful to you. If memory serves, I got a meet PR out of this a couple of years ago.
-S-