Hmm I should probably make a list of mods that can't be removed.
Also I'm working on 0.7.0 which will include Interstellar Ores and should hopefully be a release version. I would recommend a world reset, but it is NOT required just highly suggested
. I will probably add an alert via YAMPST, so people will know before updating.
Also I will probably enable retrogen (by default) for the new Lunarium ore, so it generates in old chunks. This means the old lunarium ore and chunks will go back to being cheese, and will be pretty much useless.