2> Commons is not ready to be a service project to replace local uploads, translations aren't good enough and there a not enough administrators to give enough service to all language projects.
I am not sure what you mean. es.wp and (almost) de.wp only use Commons, they do not have any local uploads. And I wish all PD images which are stored on en.wp locally now would be ever transferred to Commons by bots. It could save a lot of my time. And I do not see why translators are a problem, translating a description to an existing Commons image is way easier than to store another one locally.
Cheers Yaroslav