Well, I can't say mine are large enough that they are going to overwinter at this point. They don't have full sized leaves. I'm going to have to do something about that. I think I will build a raised bed for these plugs to gain some size. I have access to some compost. Sometimes plants just don't take off in pots but once they are in real soil, they go.
I won't disagree with you. Sometimes they work out great and sometimes they don't. The full sized plants can have their own set of problems too. I kill a lot of plants!
May I suggest you try moving them to quart pots that are taller than wide with some compost added if you have access to some? I would only keep a plant in that small a pot if it were a new seedling or cutting or maybe if I was dealing with a plant with root rot.