It seems that YOUR opinion is already developed ("Whether he was an honorable president is up for discussion, and one's opinion on that matter may need time to develop.") and you don't have a need of more time to consider. So what is it you question?
I must say that I think the belief that we will wait to see how public opinion will view the Obama years is a bit of a long-gone process.  We are an "instant" society now, one where thoughts and opinions and information and disinformation, facts and lies are instantly transmitted all over the globe.  No one "waits" to give an opinion - we saw the complete absence of that in this past Presidential campaign, the election, and the months since then.  Most people had their minds made up about, it seems, everything a full year ago.  But in the case of President Obama, the facts speak for themselves.  This essay from the NCR editorial staff lays it all out most clearly - and factually.