I'm not ready to panic just yet.
Here's a look at the average PERs for Starters (and Bench) from the end of last year (2017):
GSW 20.4 (bench=11.5)
LAC 19.1 (13.0)
CLE 18.9 (11.6)
UTH 18.6 (10.7)
TOR 18.5 (13.4)
WAS 17.9 (10.5)
SAS 17.9 (14.9)
POR 17.8 (11.5)
BOS 17.7 (12.1)
MIN 17.6 (10.2)
HOU 17.5 (16.1)
CHI 17.4 (13.6)
NOH 17.2 (13.0)
IND 16.5 (13.4)
DEN 16.5 (15.7)
ORL 16.4 (10.8)
CHA 16.4 (13.9)
NYK 15.9 (16.2)
MIL 15.9 (13.5)
PHO 15.9 (12.2)
ATL 15.6 (11.7)
MEM 15.6 (12.4)
DET 15.6 (12.3)
OKC 15.4 (12.5)
DAL 15.1 (13.3)
MIA 14.9 (11.4)
BRK 14.0 (11.4)
LAL 13.6 (11.9)
PHI 13.2 (11.8)
SAC 13.1 (14.5)
Portland had the 8th best group of starters according to PER (yes, not the perfect measurement, but good.). Lillard (24.1 PER), McCollum (19.9), Nurkic (21.1), Harkless (13.1), and Vonleh (10.8).
Give that team a full year run (healthy), and I expect good things.
Just thru internal improvement with Nurk, Harkless and Vonleh, the Blazers should improve their Starter performance. Nurk is only 22, Harkless is 23, and Vonleh is 21. The peak age for PER is 26. Typically there's a 7.3% increase in PER from age 22 to 26.
Our primary contributors off the bench (25th in the league by the way, ugh.) were Aminu, Crabbe, Turner, and Leonard. I fully expect Davis to return to his pre-injury form and help that second unit out considerably. His PER last year was 11.5. For 2016 it was 18.7. Career 16.8. No reason not to expect Davis to step up. Turner was also injured, but not sure how much more he can realistically contribute. His PER last year was 11.4. Career 12.3. Although they're rookies, I expect Collins and/or Swanigan to significantly push Vonleh for that starting spot.
I'm excited. Yes, we haven't yet made a free-agent signing this off-season. But I don't think that was ever expected to be the Blazers biggest option for improvement. We have a young team with a solid starting lineup, with plenty of opportunity to improve internally. Hold this core together, with perhaps some strategic tweaks here and there, and let's see how high they can take us!