I'm excited to hear that y'all are still passionate about the project, and I can definitely appreciate wanting to give the previous content a once-over to bring it up to your current standard of work.
That said, I do wonder if there's a risk of overworking yourselves between the rework, miniprojects, expanded community management, and new main project content. Kudos to y'all if the challenge drives you forward, but do take care of yourselves.
As for potential visual reworks, I'm neither here nor there. I think the old visuals do the job just fine. Having simplified overworld sprites and more intricate combat/event art is kind of ingrained in me from years of RPGs, so I never really felt I was 'missing out' due to the visual simplicity.
All that said, it's hard to argue with the results so far. Y'all have put out some great stuff, and I'm sure whatever comes next will be thoroughly enjoyable. Cheers!