Unfortunately sometimes there is a trade off has to be made. The Occitan cultural flowering also was more muted than our time. But at least a few features of Galician-Portuguese will survive in "peninsula standard" Spanish in this timeline where they didn't in ours. I will have to review the notes on Portuguese and Leonese orthography to determine just what though.Awesome map.
But it looked as the Ispañesa is eating the core of the Porto-Galician.
Sadly in this TL it will not be a court language as it was in OTL in Portugal, or of the Culture (secular lyric) as it was in the time of Alfonso X of Castile-Leon, well know troubadour in Galician-Portuguese.
I appreciate both of your kind words.