I think there isn't and couldn't be a DL program with the accessories already in place for an experienced lifter, cause' the accessories should be chosen based on the lifters weaknesses regarding DL.
This doesn't fit well to your request for program with accessories, but if your programming otherwise allows, you could try deadlifting more often with the 5-3-1. DL 2 x week or 2 x week / 1 x week on alternating weeks. That would leave less room for accessories though, wether you see it as good or bad. If you're squatting hard, DL 2 x week might be too much.
I really like the 5-3-1 for DL and squat and while I haven't tried doing DL 2 x week, squatting 2 x week with the 5-3-1 works best for me in terms of frequency (I've tried 1 x week and 3 x week too).
the madcow program was one of the best for my deadlift. Ramping up to one balls out set of 5 each week really agreed with me (I was also on trest).
agree with
@KvanH on the accessories though. They will depend on your individual weaknesses and even whether you pull sumo or conventional plus your ability to recover (for example, I’m not a huge fan of good mornings after heavy deads as I pull conventional and it smokes my lower back but I use them a lot with people who pull sumo).
I also think there’s great benefit in switching style and building up the one who don’t do.
in terms of general accessories imo some good ones are
- paused at sticking point
- rack pulls if you struggle with lock out
- glute ham raises
- heavy kb swings (under rated imo)
- cable pull throughs
- good mornings
- seated good mornings
- Rdl’s obviously
- bottoms up RDL
- single leg deadlift (like these as a warm up as well)
- hip thrusts
- isometric pulls (awesome if you struggle off the floor and set low)
- banded deadlifts (again for lockout)
- speed pulls (at 50% ish)
- banded (band pulling away) deadlift (great to really force you to keep the bar in close, I used these a lot at one stage as the bar used to drift away from me
just a few ideas anyway