I've just been sharing a little bit of what I'm working on, and a little bit of how I am making evaluations. Not that I'm necessarily a great example. I'll post a bit more-- maybe a couple people are finding this helpful, or entertaining...
It's interesting to think about evaluation-- everyone can decide for themselves what their goals are, what factors/characteristics they consider, and how they go about considering them. It's all good!
I like to make uniqueness a consideration-- some make it a top priority, some don't really consider it at all, and some in-between. Like Larry said, all it takes is one characteristic to make a daylily stand out. There can be hundreds of existing daylilies that have a very similar look to a seedling, but (for example) if very few of them are bud-builders that significantly extend the bloom season, and your seedling is-- then you can consider the seedling to be unique and worthy! And so on...
I'm looking at seedlings I could potentially cross my quiller with. Here are a few that struck me as potentials:
This one seems to have a tendency to curl the sepal ends-- I feel like that might help make it a good match.
I keep wanting to select ones in the same basic color spectrum of reds. Of course that isn't necessary, I guess I just like the idea of keeping the quiller red...
Wow I think it would be tremendously cool if I could make a red applique quiller!
I'm going to see if I can find the time to browse the named cultivars I have and look for potentials...