So... tell me if I am reading this correctly. This puzzle has smaller penalties for NOT getting a core, and conversely we receive fewer points for getting one. It actually seems harder to hold the core on this puzzle so is there anything else we need to know? (noticed the usual comments describing the penalties aren't here, for example)
Sorry, I only saw this comment after the puzzle closed! You are correct: the core filter threshold is the same, and will be just as difficult to satisfy; only the associated bonus and penalties have been reduced. This applies also to the new Puzzle 1430.
The omission of a puzzle comment with filter details was an oversight.