Regarding the reversers: Are you sure they aren't there or did they just not use them?

Good question. I assume all Trent 900s have the cascade-style
reversers, but I can't imagine why the outboard engines wouldn't. Or,
as Morgans suggested it might be a FOD issue. Then again other large
four engine jets like the A340 and 747 would have the same problem if
that was the case.