That whole album was good. In fact some of the songs from Worship Music could have easily fit in with some of his solo albums (except Spells of Fear, the sound quality production on that album was horrific). Hell, I wouldn't mind if Anthrax mixed it up more and played some of his solo songs. It's not like this band is a stranger to doing covers from side projects (SOD).
If Anthrax does mix it up more live, all I ask is NO song covers from DAMNED THINGS
Also, in the interview, he says he's working on some stuff on his own (at his home studio), so in addition to lyrics it may also be some drumming/harmony parts outside of the vocals especially since Charlie/Scott said they're open to new ideas from everyone. At the end of the day, the final songs conjured on this upcoming album are written and arranged by Anthrax.