I am building a gen III because it is different. I have owned big blocks ( never a small block though even though a wound tight small block is a thing of beauty).
When I started to think about a new engine I thought about this with a Gen III:
Block that can take 1,000+ Horsepower? Check.
Heads that flow great? Check.
Still a MOPAR? Check.
Stroker kits? Check.
That ticked all the boxes for me, and I am very happy that I went in this direction. More parts are coming out all the time for this engine, we should embrace it ALONG with Big blocks, small blocks, and other generation Hemi's.
Sometimes I think Mopar people are our own worst enemies. ( myself included!!)