I absolutely understand why a feature like that would be helpful! But unfortunately it's not possible because of how some continuity flags are referenced and coded. I know how daunting it is to try to re-capture your original playthrough, but it's the cost of having variation and replay value. When it comes to replicating playthroughs, I would try to focus on triggering the broad strokes of what you did before and let the smaller details fall where they fall. But if you have specifics that you are struggling with, the community in Wayfarer's Discord server is more than happy to help out with walkthroughs.
Since it isn't possible to convert old to new saves, nor to create a tool to quickly reconstruct our arc and jump straight to the new chapters, is there any way to make the save files human-readable (to see which choices were made)?
That way we could repeat the same choices (in so far as they haven't changed) and reconstruct (approximately) the same save, without having to remember everything we did on the prior play-through.
You can decode Twine saves with an online save editor, but the information may not make much sense unless you are familiar with how the game was coded. It's not a good way to track what choices you have taken because there are hundreds of small choices outside the major ones that are recorded in a number of different ways.
If you want a summary of your character's most important actions in Episodes 1 and 2, check the Story Log (available in the Journal).