For Pac's Life, I think they should've gotten a producer to remake the pops life sample (but more modern sounding), adding a female or male singer in the backround, left Pac's vocals the way they were (but turned down the adlibs a little), and added in a verse or two from The Outlawz.
For Untouchable, they should've remade the original sample and then added Krayzie Bone & an Outlaw verse with Pac's "Untouchable" hooks in between Krayzie Bone and The Outlaw verse.
It's good to see that QD3 is producing on the album tho. If Soon As I Get Home ends up on it, I hope that he remakes the sample of the original, but adds a modern twist to it (ex. Thug Nature and Friends from the Too Gangsta For Radio CD).
Don't get me wrong, I'm not complaining about the Pac album, but these are just my ideas for it..