The ability to turn off some senses temporarily

Change that double helix into a quadruple one for extra redundancy, making it harder for it to gain irreparable damage. Also, make it a loop rather than a straight line so the ends don't get shorter with each replication. And remove that dementia bug that has a greater chance of showing up the longer run time is

Baby teeth last longer. What's this bullshit about your first set of teeth lasts 5 to 10 years, then you're supposed to make it 60+ on the only other set you get? I'd make baby teeth last about 20 years.

better concentration and more logical thinking.

i hate how i put people into boxes all the time.

plus make them lie for personal gain less.

Better repairing, see Deadpool. Cancer, missing limbs, teeth, w/e.

Make a full night's sleep like 4 hours or something. As long as our corporate overlords don't take advantage and make it a 12 hour workday.

I'd like extra thumbs please

Would complete immunity to radiation be a small change?

Would it actually be detrimental in the long run?

Pros: No more cancer

Cons: No more natural evolution

Dual opposable thumbs, now we can grab and open the water bottle with one hand!