For me, if talking about "most excited" it's always going to be watching Josh Allen above all else by far. It's like if there's anything that might be so close to a guarantee it can't be any closer, it's that Josh Allen will amaze.
However, what I'm also interested to see if the D can take the next step. But Bosa certainly doesn't install much confidence lol. I'm actually interested to see the rookie L. Jackson a bit more than others myself.