the largest issue in regards to a normal server is people make tree farms to get wood and even sell it. these trees in most cases have far less wood than default and also because they are custom shapes are much harder to cut down basically making tree farms not realistic. I'd like to see a setting where if the sapling is not planted on grass (pretty much what anyone wanting decorative trees would plant on) then assume they want default gen for a tree farm. or vice versa make a config block to use for tree farms like plain dirt, coarse dirt or such.

I second this idea. On my server I sell logs, end up going out to cut trees instead of growing my own. OwnGarden trees tend to be more permanent features of a build and thus I believe needing coarse dirt under a sapling to grow one makes sense to me at least.