I'm not sure the Brez plan was to spend on Gray and Suarez. Suarez (and Durbin) were the fall back on Bregman. Still, the bottom line was that Brez invested in SP'ers more than batters and the pen combined. He also traded JH Garcia (a bat) for Oviedo.
Brez did trade quite a lot of prospect pitching, so that balanced things a little bit, but Max's point stands as correct.
Pitchers traded:
MLB pitchers: Fitts, Dobbins, Harrison, Bernardino, Murphy, Guerrero & Hicks
Prospects:
4 Perales
8 Clarke
10 Fajardo
12 Sandlin
18 Drohan
20 Travieso
21 Paez (lost to Rule 5 and then returned)
plus Aita & Hoppe
That's over 15 pitchers lost.
7 Added:
Suarez, Gray, Oviedo & Bennett
Watson, Coulombe & Samaniego