Further exploring, more updates:
*The Ritual states that you can't abort after the Candles are lit.... but the game locks you in the moment you start on the chalk (staircase, girls disappear, etc). Feels weird that the envelope and the game disagree on where the point of no return is.
* I wish I could open the curtains during the ritual. Possibly after Kat going "These should stay closed", "Are you SURE you want to open them?" or something, but I feel like deliberatly ignoring the curtain instructions should be possible (and a very bad idea).
*I wish I could deliberately do the ritual in the wrong order. (candles before chalk or something). Not sure if this results in failed ritual and nothing happening, or more evil ritual.
*I wish I could complete the ritual AFTER fpnevat gur tveyf bss jvgu cynag zheqre. V trg jul vgf rnfvre gb whfg phg fubeg gurer, ohg pbagvahvat gur tnzr, pbagvahvat gur evghny, naq gura univat lbhe sevraqf ABG fubj hc qrnq ng gur raq bs gur tnzr (orpnhfr gurl yrsg rneyl rabhtu) jbhyq srry ernyyl avpr.
Vs lbh jnagrq gb cynl vg sbe ynhtuf, unir gur 3 qrnq tveyf ercynprq ol 3 qrnq cynagf va gur svany unyyjnl. Vs lbh jnagrq gb cynl vg frevbhf, unir gur ibvpr gryy lbh ubj lbh ner nyy nybar, naq cbgragvnyyl zbpxvat lbh sbe abg orvat jvfr rabhtu gb sbyybj lbhe sevraqf.
*What the hell do the protective runestones do? (I assume this is something explored more in the full sized game, not in the prolouge)
*The more I play, the more I come to appreciate that the "size" of each chapter is just *perfect*. The school feels big enough to explore, but small enough that you feel like you can explore all of it and get a handle on things. The Hallways and school are similar. The pacing is *exactly* right, and a big part of that is how the authors have made all the spaces just the right size. It's really well done.
*In the underworld, there are signs telling you not to run, and there's long hallways and jumpscares encouraging you to run and... there didn't seem to be any consequence of running? Maybe I missed something.
*In the supply closet after you Tb qbja gur vzcbffvoyr unyyjnl naq zrrg gur "phygvfg/tnheqvna" guvat... gurl gryy lbh nyy gb tb ubzr (terng nqivpr). Ohg nyfb ol gung cbvag va gur tnzr, gur fpubby vf ybpxrq qbja jvgu ab rkvgf (pvephyne unyyjnl, pybfrq jvaqbj). Fb... vgf abg yvxr gur tveyf PNA sbyybj gur nqivpr naq "whfg yrnir".
Vg jbhyq or pbby vs bar bs gur tveyf zragvbaf guvf, naq gur tnheqvna fnlf "Gur jnl vf abg bcra", be "bcra gur phegnvaf", be FBZRGUVAT gb rkcynva ubj gur tveyf npghny trg bhg.
As always, these suggests are made with no knowledge of the other design decisions you are juggling at your end, so might be that none of them work.