Totally! Why not utilize his talents and have him put his mark on Testament's music since he's around? I mean he wrote most of Dark Angel's stuff practically all by himself, riffs and song structures included (and some of those riffs are classics). If not this, Eric could at least use some of Gene's drum patterns ideas, at least for one or two songs. I'm sure that wouldn't ruin his artistic vision and make the record suck
. Of course, I utterly respect how Eric creates the music from start to finish, but since he's got himself such an asset, he should exploit it to the fullest and allow some new influence in.
Plus there's the lyrics. Let's be honest, metal isn't about lyrics (most of them suck), but Gene's ones do stand out quite a bit. His vocabulary and view on certain subjects were a tad more original than those of 99% lyricists in metal, even if you don't agree with his standpoint. Testament has had some decent lyrics in the past too, but in my opinion some of their latest stuff is a little bit too cliche in this department.
Anyway, I'm glad he's having fun and feels respected in the band. Hopefully, he'll do the next record with Testament.