Hey my trip was not for everyone. I understand that. The fact that I only had 5 nights (I had limited vacation time as I was starting a new job) and did all that I could I have no regrets. Denali may very well be amazing but I saw pleanty of other amazing things all over the state that it quelled my desire to go further into Denali. I was not in the mood to sit on a school bus all day in Denali but maybe some people would enjoy that. Even though my trip was 5 nights long I didn't feel rushed. I am not the type of person even if I had unlimited time to stay in one destination for long. On top of the fact that I was in Denali in high season,it was crowded and expensive I feel I made the right decision.
As far as saying the Artic Circle was something to just say it was done is not accurate. I thought the scenery north of Fairbanks was some of the most interesting scenery on the trip. But as stated before it all depends on what type of trip you are looking for. It does sound like you are more the stop and smell the roses type so more power to ya!
What ever you decide I am sure you will have a great time!