You can, but I think it's better that the film has its own thread. Time permitting, I'll add a few comments there. Actually, you may also want to consider starting a new one for Bysoku 5 senchimtoru. Some of us might get to watch it in the upcoming months.

"Honestly, I have always wondered why the Best Animation category in Oscar have omitted such great animation. (problem of language?! culture?! or distributor?!)"

While language and culture are always a factor, a brief theatrical run in the U.S. is required for a film to be considered for most categories of the Academy Awards.