Not sure how you meant that question.
If you meant host the unity. = Unity based games I feel are over bloated resource hogs. Java has a longer history.
If you meant develop the plugin = That is up to whomever takes the challenge.
If you meant investment = Basically I have as a whole. Rising world makes a great Christmas present. I purchased a few copies. To invest funds in the Unity version directly I would not do. I would invest to see more done with the java version.
Red did a very careful choice with Unity and i trust him that he balances things right. Just try it. If you own the java version already, the unity is included. It won't cost you a cent