279 frame (5.58s) improvement over the current published TAS entering Egg Corridor.
You can watch the First Cave segment here (minus a minor 2-frame improvement that I found afterwards) and the Mimiga Village segment here. A breakdown of the exact time saves and the details behind them are in the descriptions of those videos.
I don't know if I will ever be able to finish this TAS...this game is very difficult to optimize and has a lot of RNG and I'm not sure that I can do it all by myself. :/