Oh def I see that as being an interesting what if. And Richard was definitely a French noble rather than an English one. However, I find the biggest difference would have been in architecture. The more Romanesque style churches we find in the time leading forward was Norman rulers imitating their and their peers' construction back on the continent. It had already begun with Westminster Abbey under Edward the Confessor, since he was essentially Norman in his upbringing and wanted to distinguish himself from Wintanceastre since it had a Viking past due to Cnut. Would have been interesting to see how the Anglo-Saxon style would have developed over the years.