Assuming they're not doing anything underhanded (which I don't think they are, since, well, I get paid what I expect), the "allure" of "seeing the blocks you've found" is simply that: something to look at and "brag" about.
Kinda cool? Sure. What *MOST* people in a pure PPS pool are looking for? I sort of doubt it.
I think my key point is more about transparency then fun charts and graphs to look at. While abcpool.co is fairly stable, their lack of details regarding the pool doesn't inspire confidence. Nor does their new marketing strategy around their fees.