Difference of 了 and 過's usage
I agree with you for most of them. I have some comments below:

(1) would sound more natural when adding a '过'. 我看过这本小说了。which is the same as (6).

(7), I did hear it was said by the folks from Taiwan.

(12) sounds ok to me.

Just one observation of mine. In the register of the mainland, we don't usually use 有 in this kind of sentences because it's kinda redundant. Like (10), 我有看过这本小说。== 我看过这本小说。 I've heard Taiwan folks typically used 有 in this kind of sentences.