I find this is a pity.
Those manuscripts are stepping stones in their writing journey. So they may not be as good as their manuscripts of today, but they are a measure of their development as a writer.
I am actually quite fond of my early characters. Some characters pop up in other manuscripts as supporting or walk on/walk off characters. So why should I bury them ignominiously?
So when I hit a dry patch, my daughter (Gotta love her. She keeps throwing things I told her years ago back to me.) told me to quit moaning and do some typing. So I am.
I am typing them up as is, warts and all. This is merely the first draft.
The plan is to then apply what I have learnt in the time since I wrote them to them in the second, third and fourth drafts. I will even update them. (It is interesting to see how little things really do change in fictitious worlds.)
Writer's Block you are dead in the water!