When I understand the statement under the Kisei hakavod it seems like that’s the highest point, basically it’s the best thing to die al kiddush Hashem (something which rav Akiva was hoping for his whole life)
But, perhaps it’s not. Perhaps there are different levels that qualify as “under the Throne.” Why do you think Heaven is so one-dimensional?
And we do it for an aliyas (going up) so if you’re at the top what other benefit is there?
I don’t know. I’m not God and He doesn’t send me the internal memos from Heaven regarding its infrastructure. However, I would think that there is always additional benefit that can accrue to a neshoma. I would think that God can easily create an infinite system where there is always room for more reward/improvement/etc.
The Wolf