You can upvote the nodes he wrote, but you can't raise the esteem for blazar doing so; you can do so only within your heart. Giving his writings more reputation after his departure than they had whilst he was among us strikes me as a particular bad idea, but I can see your good intention in that.
I have always been on good terms with him, and liked him, although we never met in real life. Sadly, I have put off work on a piece of software which helped him browsing PerlMonks. I had in mind to make it into a Firefox plugin, which would allow for browsing any site, not just PerlMonks, by a customizable set of keys.
Discussing the issues, blazar told me
Just answer if and when you'll like. Be it that it taks months or years!
and alas, it took me too much time. So, the lession is: if you want to do good, do it now. Tomorrow might be too late.