Sano, Kepler, Polanco, and Buxton are the building blocks of the offense, IMO. They haven't all excelled at the MLB level yet, but I think they will eventually turn into habitual all-stars. Rosario and Vargas are fringe building blocks. Hopefully in a year or so we'll be talking about Nick Gordon in terms of building blocks, too. The pitching side of the equation has far less certainty. Probably Berrios, probably Chargois, maybe May and Duffey. I have a feeling that both Gonsalves, Jay, and Romero will pitch themselves into this conversation soon enough, too, but it's still way too early to say for them them. We desperately need to improve our standing in the pitching department, even if it means trading a fan favorite and/or a very productive position player.