It should be noted that those of us trying to use clusters are also heavily modding our servers. We are inevitably going to get larger character profiles. Is there no way to simply make the game more configurable? I realize that WildCard has long preferred a Harrison Bergeron approach to determine how players will experience Ark, but it's never too late to change.
In the context of the moving between servers with different engram point rates? That is about as graceful as it can get, it's something that can be recovered from without admin intervention even. That whole situation is a result of the game being pretty configurable. We do occasionally add new server config options, but adding those is not usually trivial.
As for the buffer overflow error, I suspect that's more an operating system hard limit of too many things trying to be processed all at once, that can't just be fixed by increasing an integer variable.