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I would think that the team would absolutely want the Special Collection discs since there is at least a small amount of improvement over the Definitive Collection. After all, if this is the end-all-be-all capture then wouldn't you want the best source even if it is by a small margin? If the best source isn't used then someone can always say "yes, the x0 project is amazing...buuuut it could have been better if they had used the NTSC-J version." I would hate to have that in the back of my mind every time I watch it. "What if?"
If it's just the money then I'm sure all of us watching you would have no problem chipping in to help pay for it through donations. My gut tells me there must be a bigger reason than a money shortage though, so I trust your decisions.