I have my Core and Hardcore sets, and my hardcore have almost no perk 2s.
Toughness is useless, you die too fast for it to matter. Scavenger is debatable. It's too inconsistent to need* scav (more chances to die) Cold Blooded is only if you want to avoid heavy Target Finder users. Fast Hands is again, depending. If you intend to switch weapons a lot go for it. Hardwired = pretty much no. EMPs are almost redundant on Hardcore, as you have to HUG anyways.
Unless you specifically need* one for some reason, take the point and get another attachment/equipment. --- Petition for more Rush in Rock Band: 19 signatures