Many times I would need a load/save feature to save some configuration for an object, after I create it. For example Fibonacci retracement values + color + style.
Has this useful (for me) feature a chance to be a part of MT5 in the future?
I don't think so. Anyway it definitely wont be at the nearest future.
You can make library function or something like this which will save and load settings of objects by using MQL5.