This was the route I took.
Thran Dynamo,
Gilded Lotus,
Sceptre of Eternal Glory (booooo), and
Throne of Eldraine were the cards I started playing. They allow you to vomit out all the cards you just drew to really take advantage of Braids and her draw capabilities. The flip side of this is that you lose some early game plays, especially artifacts to sacrifice, that allow you to develop your mana to start playing all the cards Braids is drawing you. Of course, what else are you sacrificing on turn 3?
I'm not sure about
Ichor Wellspring and
Mephitic Draught. I know how good these cards can be. I played Daretti for years and now have a
Jan Jansen, Chaos Crafter deck. But on the other hand I try not to overlap too many cards between my decks. If Braids doesn't get an explosive start, the early game can feel quite awkward. Maybe they can add in more velocity.
Wait, you went from Daretti to Jan, too? Fantastic.
Yeah, they're sort of omnipresent in sac decks, but they're just so dang good. If you convert to a late game ramp package, adding in more of these will smooth out your early game by being low mv drops that set you up down the line. If you're mostly abandoning early game ramp (I would keep
Jet Medallion obviously, that card is nutty when you have mana and a full grip), I would also some more early game stuff like
Night's Whisper,
Stitcher's Supplier,
Undead Butler, and possibly even something bad like
Ransack the Lab. In general, since Braids is going to be drawing a ton of cards as early as turn 3 without
Jeweled Amulet or
Sol Ring, I would focus on permanents 2mv or less to start the card draw train.
I've used her in budget lists or lists that wanted a lot of recursion
and permanents, and she does work. I mostly suggested her because you're already running
Phyrexian Delver, a card I think is worse. It's not bad by any means, I really like the card in grindy mono-black or black-centric builds, but if you had to choose I would go with Lili. I like both, but you might be right that 5mv is too high for the effect.
Speaking of mana values and things I'm not a fan of, I don't like
Grave Titan or
Finale of Eternity here. Titan is a mere beater in a format where those cards lose a lot of value, and Finale, while strong, is very expensive while not being a permanent. I think
Blood Artist is ineffective as a one of without other aristocrat staples, too.
Also, I think you should run more lands, especially if you're running less ramp. Your curve is a bit high even if you ignore the top end cards you're mostly going to reanimate, and with drawing so many cards I would think it's important to really hit those land drops. I hate telling people to constantly "play more lands and lower your curve" but I've been doing it more and more lately and my decks have been humming like well-oiled machines.