Just a quick update!
I have been using the minfree values of 65536,73728,90112,131072,196608 and so far I have been very happy with these! While I may not get the maximum amount of opened applications at the same, I think 12 is plenty good! I’ve also had zero OOM kills since.
I stand my opinion that the X10III ships with too conservative memory limits and they can be safely lowered to some extent without risking OOM at application startup, and providing a much better user experience.
Edit: I simply haven’t had more than 12 apps opened at the same time.