Woo, finally got a top score of 110!
... although I very much feel like this was one part luck, and one part learning what schools are available and learning the manner in which things play out so I can (try to) preempt placements and gamble on big payouts. (My usual scores are in the 80's)
I would love to see a little more control over or foresight on the schools - they can make or break a run so easily. So much so that it feels they make more of a difference than the actual placement of your symbols.
Having them show up even 4 placements sooner - so you can play to the second school more and establish a course earlier would help a great deal. Alternatively having a preview of what is available before having to pick, or having it linked to what has already been placed somewhat (having the second school alter the rules over a symbol you've not even invested in doesn't present a meaningful choice)
I would also love to see the "Hold to speed up count" and "Replay count" features that Tiny Island has - they greatly aid the play experience and help clarify a few school effects that you've misread (not that I've ever done that before...)