You have great hope for a film because you have a fondenss for a character - even if you really haven't followed that character's story and they do this. Just more typical slap it together comic book superhero movie.
Oa and the rest of the Green Lantern Corp looks like stuff left over from the CGI vault that made Avatar with just plain bad CG (besides Kilowog who looks decent). For the most part, the effects look terrible - there are exceptions - the green fist, the flight testing some of that look decent. But, overall it appears as if Warner just wants to put out a second rate Iron Man type flick.
And the costume. A CG costume probably sounded great on paper... and you might pull it off in some instances. But the computer graphic mask... Whisky Tango Foxtrot?
Maybe it will translate better on the big screen. They've got 6 months or so to make it look better... but, really all I'm seeing is bad CGI and a cliched superhero story.