That's just it, any list you create can apply to bad teas as well. If it were otherwise then becoming a tea-master would pretty much just be a matter of memorization.Fukamushi Dynasty wrote:All those aspects could still be present in a bad tea.
There's definitely a fair amount of subjective judgement involved, and each type of tea is going to have different qualities to look for. I think you also have to consider the steeping, as it can change things as well. As an example, any tea can be bitter if over-steeped or too thin if under-steeped. I don't tolerate any bitterness in my teas, but that can usually be remedied by steeping it differently unless the tea is stale.
I would say the main thing to look for is how forgiving the tea is and how many steeps it yields. There will still be exceptions, but good quality teas are usually pretty easy to steep as long as you have the right teaware, parameters, and conditions (Wuyi seems to be affected by the weather, for example).