Not just Figment, but the whole pavilion was much better for its time, from the ride, the exterior fountains, to Imageworks, to Magic Journeys/Captain EO. Its hard to say how it would have held up over the years, but at least for the first decade of its existence, the Imagination pavilion was the most enjoyable part of Epcot. Whereas the original was fun, whimsical and technologically advanced for the early 80s, the updates have all been little more than cheap patch-jobs.
Not going to argue for Horizons, though. I get that people have a nostalgic connection to it, but I don't exactly understand why people mourn its loss so greatly. Horizon's vision of the future would have been extremely dated had it survived. I know, we haven't colonized the moon or the ocean depths yet, or terraformed the deserts... but these were the dreams of yesterday's future. We've long since discarded these ideas as impractical and/or not desirable.