If that kiss had never happened... Hermione has a lot of big feelings. Mostly rage. Definitely. Just hatred, and general venom. That's all. Definitely not love. No. Can't be that.
Stuck in the back of the car as they drive across Australia looking for Hermione's parents, Ginny gets a glimpse of the Ron-and-Hermione who aren't a couple, but who also always have been. A little dark and moody, but an alternative beginning.
Things rarely turn out the way they ought to, and defeating a Dark Lord can really throw your life off course. An slightly alternative future for Ron, Hermione, Harry, and Ginny.
Gratitude and acceptance are not all they're cracked up to be, and can seriously get in the way of your love life. Also, people can be awful, and the heat distribution in pizza is problematic. Tonks takes the lead.
Meeting new people is always difficult, especially if they spend the entirety of secret meeting staring at you. A glimpse at an alternative early beginning for Remus and Tonks.
If they hadn't been sacrificed for some narrative symmetry, and because it really is unusual for things to move that fast. A brief alternative Lupin-and-Tonks relationship arc.
If you're ok with narrative asymmetry… and you really want some way to believe Lupin and Tonks might've survived… an alternative no-I-refuse-to-believe-they're-dead ending.
If that kiss had never happened... An alternative Ron-and-Hermione get together, featuring a hangover and lots of soap (includes a little nudity and accompanying adult themes).
If that kiss never happened... Ron finds himself in a muggle police station with Draco. Schemes and hijinx afoot. An alternative Ron-and-Hermione get together, with a sneak peak at an alternative future.
If that kiss had never happened... An alternative Ron-and-Hermione get together. St Mungo's, post-battle, with a few minor tweaks to certain bits of battle action.
When she tampered with her parents' memories, she was assuming she wouldn't survive. But she did. So she cleans. Ron cooks. George taste-tests. Harry... does what Harry does.