I think the option for History Log (Preferences -> General) is agreat feature.
Though the way you implement it make it less useful.
The option whether to embed / save the history logn into the file / into a text file should be in the "Save As" dialog box.
I would recommend a check box which its default would be set in the preferences yet the use will be able to change it in each file he saves.
I would like to have an option to export the actions as a text file (Now I"m able using the ALT + Ctrl and Save Actions but for the whole actions while it shloud be for each one by itself)