Hoyer and Theo for that matters, likes to hold their guys and not trade high on them when/if the opportunity comes.
We can agree up until this past offseason, Hoyer hasn't had the money to spend, so he looks for bargains for the bullpen and bench and he pretty much has stuck with the young guys that came through organization or traded for.
Let look at current position players.
Amaya, Hoerner, Happ, PCA , Shaw, Ballesteros all came up through Iowa.
Busch came from Dodgers organization
Nicky Lopez, cheap journeyman bench guy
Suzuki was purchased from Japan
Conforto, low cost FA signing for bench
Kelly was a low cost FA sign to be backup C
Swanson was his first big FA sign (position player) after coming off his career year and hes been in a decline offensively each year here.
Bregman is his second biggest FA signed position player and so far hes been nothing but a disappointing singles hitter with zero ability to hit with RISP.
So, this is why the Cubs offense has been mostly stagnant the last couple years, because it is the same group of guys, and despite having some talent, they are not guys that can carry a team for the bulk of a season, these are guys you have to wait and hope for them to go on hot streaks together.
If youre hoping for a change this coming offseason you can put that aside because all but 2 (Happ, Suzuki)are signed to be back, and it wouldn't surprise me if Hoyer decides to bring one or both of them back next season and if he lets one go, his replacement is likely coming up from Iowa.(Alcantara).