I had no problems with Patrick Gorman's portrayal of him in Gettysburg, although I'm not a Hood specialist by any stretch. In fact, I rather liked it. It's not even Gorman's actual age at the time, but that he looked old for the part, and even more so in Gods and Generals, which was set before Gettysburg.
Hood as portrayed by (l. to r.) Patrick Gorman in Gettysburg (1993) and Gods and Generals (2003), Levon Helm in In the Electric Mist (2009) and the general himself in real life (c. 1865).
One might argue that Levon Helm appeared in Electric Mist in a form that Jones' character would recognize as Hood (i.e., "old") -- given that it's all sort of mystical and surreal to begin with -- but that doesn't really hold for the other two films.