Reeve played the role perfectly for that timeframe.
for that time frame, yes.
But that's not gonna fly nowadays. Plus, you don't want to do the same "type" of Clark again. Especially one that wasn't really an accurate portrayal of the character.
If they went with the Reeves Clark again, the comparisons wouldn't end plus cats would start severely overrating the Reeves Clark out of spite and they agendas.