Will the new SDK come with ability to use the new lower "raw" spreads that FXCM offers ...for back testing?
Backtester uses the spread which was provided by FXCM at that moment. A user cannot change it.
I believe that many users would find the ability to set the custom spread very useful. Thank you for the suggestion. I have added this feature to the wish-list. However, I cannot guarantee that this will be implemented.