That's essentially what it was like at first, when ABP didn't have a default subscription: Users then complained that it wasn't blocking any ads, and the first answer in the FAQ was about making sure you've added a subscription, so Palant & Co. looked at the state of the filter-lists and set up appropriate defaults; back then I believe it switched between EasyList and Fanboy, with an appropriate regional supplement, but now that the two have merged it's just EasyList and possibly a regional supplement, and I've wanted ABP to load the Malware Domains subscription by default, but I also realize that's a huge list and that's probably why it's not pre-selected.
I realize I'm normally opposed to the "WEN I INSTAL ADBLOKR I WANNA BLOK *AL* ADDS RITE AWAY" types in threads about the Acceptable Ads Initiative, but there's no way they're going back to "off-by-default": We want to make it as easy as possible for users to block the annoying ads, and we're not so concerned about making sure we exempt every single decent ad out there; that is, while most filter-list authors seek to avoid false positives (blocking or hiding the content that people actually want to see) even at the potential cost of false negatives (cf. EasyList no longer trying to block Hulu ads), the Acceptable Ads Initiative focuses heavily on avoiding false negatives (exempting ads that turn out to not actually be acceptable) at the definite cost of false positives (neglecting to exempt ads on sites, or by ad networks, that never contacted Eyeo GmbH to ask about being added to the whitelist).
Remember, this is "Adblock Plus," not "False Sense of Security" or "Adblock for Advanced Users Only."
There's a buzzin' in my brain I really can't explain; I think about it before they make me go to bed.