Norok Vokun G.
Overall an ABSOLUTELY awesome piece of software, BUT...
... I really dislike, that they don't allow modpack authors to include it directly. I understand what might be the reasonings (less donation potential) but still think that should change. This isnt a paid piece of software, so I personally think it shoudl be allowed to be included, even if it ment that the user'd waive their right to complain or search support from the optifine author directly.