Not to get too critical here, but the slower pacing in the beginning matched the mood of being locked up; I think it was artfully (and intentionally) done, was it not????
It may be hard to see this as the artist, but your older sprite work looked fine. Yes it was simplistic in a sense, but it was well executed to match (once again) the mood and voice of your writing, the some-times stale backgrounds, and the ambient yet melodic resonating songs were all woven together perfectly to set a really great mood which was matching the setting, circumstances, and scenes.
I don't know what you have planned plot-wise, but I am lacking confidence since the recent "polishing" has wiped away parts that use to fit neatly together, eg the few amazing artworks and pleasant surprises are like rewards, and the only way to make a reward feel more rewarding is to make the audience earn it/not expect it; so if we are cutting the pacing by a lot in the early parts it will impact those "wow!" moments in the future for the worse. Your fans love this VN because of those hard punches and overall harmony of pulling off the story as you have done was artfully executed. Ripping it apart to appease a perfectionist's ego won't go down well with the people who already love, respect, and support what youve made. At least wait until the end of your story to polish it up so you know your next steps and know what cracks to fill in without slipping or regretting the effort youve put in so far.