

In my experience no matter how careful you are if you merge sets, sample and styles from different sources and if you have styles which have a lot of real drum samples sooner or later the 15k slot will get filled even if your set is no more than 400-500Mb. So basically 1.5Gb space is useless unless you can have more slot space and increase the sample slot number.
Now the "pro" forum gurus will argue that their "pro" commercial set is 1.5Gb with sample slots under the 15k limit which is great for them but I really don't care about their sets because I'm an ordinary musician which I want my own set to use the 1.5Gb space limit. So far no matter how I try to go around it I cant load more than 500Mb.
First solution which hopefully Korg will impress us again is to increase the RAM slot number from my opinion with my testing at least the number should be double since an average user(which I'm thinking about my self) will fill the 15k with no more than 500Mb so for 1.5Gb the number for available RAM slot should be at least 30k to be able to use freely this space without going in to much hassle of "professional" programming and sample management.
Second solution is for the OS somehow to identify automatically duplicate samples and delete and sort/reassembly them to lower number Sample Slots which I don't think will be possible at least for the current Next OS.
Third is for the user to identify manually duplicate samples which in real world its not impossible but its a pain taking a very very very long time to go through 15k RAM Slots and identify each sample and sort/reassembly manually each drum and sounds. My guess will take 6 months or more to go through 15k RAM slots manually each one which is not practical.
That's why I think the first solution is better than all and at least will give us a closure on the PA4X potentials at least to use the 1.5Gb space as a normal user. I really hope Korg will go down this path and increase the sample SLOT number.