So, SS has AoE Problems (tm). Foot Stomp aside, it really doesn't do much unless you're fighting a single target, or you're like me and overinvest in Hand Clap for the memes. And it's also a really old, dusty set that could use a little life injected into it in any case. Not that I'm biased - my super-strength/invuln Brute says so. I've seen a suggestion here or there about moving powers around or changing powers entirely, but I have my own idea; one which could maybe solve the problem while retaining a good feeling of "SUPER STRENGTH" with heavy hits and thunderous impacts.
That being: "Impact" - An effect like Rad-Melee's Contamination. I'm thinking a dead simple idea: Jab, Punch, and Haymaker have a chance to inflict a special "Impact" status on enemies they hit. If those powers hit an enemy who's already afflicted with "Impact", they have a chance to instead create an "Impact Burst", a small AoE that does a some light Smashing damage and causes knockdown. Or maybe more damage with only a chance for KD. The concept here being that Super Strong punches hit so hard that the shockwaves from each hit hurt enemies nearby. If it suits the balance-gods, you can take the secondary effects off of Jab, Punch, and Haymaker to make room for Impact.
That's it, that's the idea. Some tepid chance-for-AoE damage on their most boring normal attacks to give a greater feeling of big-smashy hits, and give more AoE control and damage beyond Foot Stomp.