I am not sure where I land on this issue, I am not entirely sold that it should have been filled to the brim and packed tightly but it does seem like they could have done better either for repairability or at least having things like a headphone jack and maybe better speakers (I have read that speakers can do better with more hollow space without adding much weight but I’m not knowledgeable enough)
The comments have a lot of good viewpoints
Those things aren’t missing due to lack of space though. They don’t want to add them. If the tablet doesn’t throttle and overheat it doesn’t need a bigger heat sink either.