I’m okay with it being mixed up a little, as long as it’s thoughtful and clear.
I guess that first criterion can be a bit subjective – I’ve definitely found a couple of the scoring mechanisms thus far to be a bit unenjoyable and demotivating, whilst some others have been okay.
There do seem to be some clear preferences emerging, e.g. in particular increasing scores with difficulty, as motivation to go further (or for a sense of progress/rewarding that), and minimal randomisation in scoring.