There is sense in that Giggs would be better suited to coaching the higher ability players, as someone who spent his entire career working and training with the very best talent either British or foreign, he probably has firm knowledge on how to work with and develop this profile of player.
Though I wouldn't be against Giggs coaching our first team, it would only work under certain conditions. The issue is is that he would probably bring in his class of 92 mates as his staff and between them they wouldn't cope with the demands as Man United is just too big a club with too high expectations. What he would need to do is bring in a large world class coaching set up to support him on the training pitch, just take a look at Pep's coaching staff, for all his genius he literally brings an army with him wherever he goes, we even had to give City a few extra seats on the front row. We would need a similar set up for him alongside a sporting director who could support him with the football management side of things. It would have to be a huge commitment either way.