Technically, you can still use "read data" first for 2012+ Clients as long as you do not release it publicly. I've created two clients one with read data and the other without. The client with read data is only for whatever changes I make within the data folder I need to see before I release it any changes. Other then that, I don't have a problem with the read data. But since I'm using read data on that client, I can't see any mini icons or items lol which doesn't phase me since I only care about the changes in the data folder that I wanna see .
If you don't know how to work around 2012+ clients (since they are a little complex) I suggest you just stick to 2011 clients (get them from the link above).