I am concerned. But not enough to fail to recognize that DD did what he did for a very good reason and that it was probably the right thing to do. Basically he hit fast forward on the timetable we'd had for several of our prospects and replaced them with young, cost controlled, skilled players instead. He did this for a very good reason, because the team was ready to compete now and there was no reason not to pull out all the stops and give us the best possible chance to compete for a title.
If DD had gone after aging stars or guys with limited control left, I'd be concerned about the price he paid, but what he's actually done is line up a 3 year playoff window during which this team is going to be at its maximum potential competitiveness. Instead of perennial contention and creating a rolling peak with a few guys peaking ay any given time, as Theo liked to try to do in his later years here, DD's lining up a max peak team, the way Theo did in 04 and the way Theo did again for the Cubs in 2016. Theo seems to agree that that's a good ploy to play when you're a new GM coming into a market and trying to make an impression.
We'll pay for it on the back end, and DD is probably full aware of that, just like Theo was in 04 (05 and 06 were not particularly fun, then the farm system recovered and delivered us a huge win in 07) and probably is with this Cubs team. but I'll take it if it gets us another banner, even if it means some poor years in 2021 and beyond.