Although the Next has much more memory overall, it still has to switch out parts of it into the main memory, so that meant that some parts were clipped to fit. I'll look at the timings, and I'll see what I can do to add some of that hint text back in where possible.
Update - I added adarkroomnext-beta.nex which fixes the fire timing, adds back 10 instances of hint text, and makes it easier to see what items cost. I'm going to look into other issues, but those may take longer.