I was always fascinated by the tomatoes growing out of plastic tubing when I was a youngin'. I was an odd one though.
It was simply an example of EPCOT Center showcasing innovative technology that wasn't consumer electronic based, was feasible, and yet still groundbreaking enough that it took another 30+ years for commercial uses to catch up to the concept. This could still be done if the correct technologies were showcased. For example, Test Track could have showcased electric mobility and it still today would have been relevant with few updates. The Nemo overlay of Seas could have spoken about the evolution of oceanographic research which could have been on point for both IP and existing theme. Mission Space mostly just needed a better pre and post show and would have fit well with old EPCOT, at least until space travel becomes as common as air travel. These are helping guests explore innovative tech that still moves slowly enough to not feel stale after just a few years.
There is too strong an association with the technology side of EPCOT Center being centered around Communicore/Innoventions and guests having hands on interactions with electronics and other "devices". This sells short the legacy of EPCOT Center showcasing or highlighting new technologies like the hydroponic farming of LwtL, or the moving theaters of UoE, or the new homesteads of Horizons, or at the time the largest saltwater tank of the Seas. Some practical and some fanciful. There should still be room for this at the "New Epcot."
FWIW, I'd love for GotG to have some "Energy" edutainment factor too, but I fear it will be a simple nostalgic nod, or worse, a nostalgic slap in the face.