The GT5 version of SSR5 prevents the big track in the video in the opening post to happen anytime soon. SSR5 and 11 wouldn't be able to connect in that way due to the North orientation of SSR5 and the absence of potentially connecting roads in its sharpest hairpin. However not all is lost for a big track. In the GT3 version of SSR11 an illuminated bridge similar to what can be found in SSR7 can be spotted outside the track at the end of the main straight (maybe it's the same?). Also it appears that SSR5 could be able to connect to SSR7 with the closed passage under the tunnel at the end of its main straight.
Anyway, regarding SSR11 personally I would like to see a GT1 version without the pointless chicane.