I often see people board down to ten dredge cards, which I dislike, as the two-mana enablers rely on you to have a dredge card in your hand to discard, and youre often sideboarding out an Otherworldly Gaze as well, which acts as a way to find dredge cards when you dont have one in your opening hand
There are plenty of RG+ commanders that could make use of the cost reduction on their activated abilities, even if you never pump up Agathas power
Inverter and U/W Control decks were already sort of in the market for cycling lands, and adding triomes can give the marginal upside of being able to Explosives for three, while also allowing those decks to up their land count to stick their otherwise inconsistent colors (something they cant do currently due to need for answer density) Thopter/Sword combo and Urza may not exist in Pioneer, which greatly suppresses the cards power, but it could help decks like Ensoul Artifact get back on stable footing
Some higher-rarity cards actually have better pull rates than ex cards, but even the ones that dont feel like theyre easier to find than ex cards