I love that response.
That said, I do like Old Kleio more, mainly because there's a certain softness to her character that seems more in line with the general art style of the work at large. However, I wouldn't presume to demand from the dev to go back, as at the end of the day, it is Andrealphus's artistic vision, which hasn't done us wrong thus far. Additionally, I poked around at the art a bit, and it doesn't look like it's by any stretch of the imagination that easy to revert to old Kleio. The art seems like it stores the general body, with different overlay features for their expressions, etc. placed over them at times, so it wouldn't be a simple image swap. You'd probably have to go back and look through multiple change sets if it's even in source control. And even then, I think there were many major updates in between where the code was redone (partially to do with lags, other times to do with Ren'py engine upgrades, etc.)
Attached a little image for your viewing pleasure for the internal chuckle I had at Andrealphus's response. I don't know why, sometimes I like the way the dev's curt and blunt responses sound like mental abuse to me, even though it's obviously not.
Please always be you, Andrealphus.