I don't mind it, as long as they keep auto-save optional. But for now auto-save triggers only at certain points, you must use at least F5 to manual save, though full saves (ESC > Save, New Save) are best because they won't be overwritten.
I just create manual saves at every major point, and the F5 quick saves are for between those. When auto-save was also on, just made the game lag when suddenly started to save without warning. Also both auto and quick save has less descriptive names, hard to guess where those were made, manual save is best.