Dach is currently on pace for 14G/42A/56P over 82 games in his D+4 season.
Some other players D+4 season pace:
Huberdeau: 11G/23A/32P
Dubois: 21G/36A/57P
Landeskog: 23G/36A/59P
Suzuki: 21G/38A/59P
Barkov: 28G/41A/69P
Toews: 26G/46A/72P
Duchene: 29G/45A/74P
Seguin: 38G/48A/86P
If you go by points, he is middle of the pack and his closest comparables are Dubois, Landeskog, and Suzuki.
If you go by assists, he is higher up and his closest comparables are Barkov, Toews, and Duchene
This is good company for a player to be with in his D+4 year.
He's currently 132 among forwards in points per game. That puts him healthily into the production profile of a second line player, which is great for a 21 year old.
If you want to do a value-for-production analysis, the players around him in terms of points per game are:
Bunting ($0.9M)
Toffoli ($4.3M)
Lee ($7.0M)
Monahan ($6.3M)
Zacha ($3.5M)
Fagemo ($0.8M)
Huberdeau ($10.5M)
Trochek ($5.6M)
Granlund ($5.0M)
Dach @ $3.3M is on the low-end of all of these players. He's also substantially younger than every single one of them, with the exception of Fagemo.
Add in things he already has (defensive game, board battles) and things he may have in the future (potential), this is a great addition to the team and is great value for his cap hit. Great addition relative to where he is in his development arch as well. I'm hopeful he can continue his production pace and really cement this as his break-out season. Also hopeful he repeats these results or exceeds them in future seasons as well.