The costing, reports, FIFO, LIFO and actually everything yo have mentioned is already planned.
I am not able to give you any ETAs unfortunately. We are trying to develop ATUM and all its features on the go while technical support of our existing users takes priority. That is one of the reasons, ATUM’s bugs gets cleared within hours of their discovery.
All the above features will be out as part of Premium Add-ons hopefully before the end of 2018.