As former Seeker of Void, I feel the loss probably more keenly than most people. It's hard to overstate how great that extra fate was, and that's even when I put Kuroi Mori on my stronghold, so it never flipped up until end-game. I'd rather have flexibility with province choice from Seeker than 3 influence for flexibility in conflict deck choice. Provinces are just far more influential per-game than one conflict card that many games won't even be seen.
I do think that Keeper-only cards have been more appealing to me than the Seeker-only cards so far. Seeker Initiate's just league worse than Keeper, though. Especially with the battle for favor that's going to start happening, Keepers are always relevant. Seekers cost fate and require you to win your ring after tossing away fate on a 1/1. It's just not worth it, because it gives your opponent a clear chance to deny you your investment. It's a win-more card. At least with Keepers, you can just toss them in the graveyard if you're not going to win the ring you need that turn.