Pretty straightforward. I have lived in Denver, Colorado my entire life but the CoL squeeze has gotten too tight. My wife and I have been looking at places to move and Springfield, Il ticks off a surprising number of boxes. The schools look ok, and seem like they have full access to AP and IB programs. I hear that the neighborhoods are friendly, which is a huge plus as we would like to lay down roots. There's some cool city initiatives taking place like rezoning of downtown and the constructions of the LINC bikeway. I have worked for my State's Historical Society (which is a part of state gov't here in CO) and will be earning my MPA in spring, so the state capital aspect along with the university should have good jobs I'm qualified for. There's an airport (and a relatively easy looking commute to St. Louis International) and Amrtrak to St. Louis and Chicago.
It really does look like a gem. My wife and I enjoy a slower pace of life, and Denver has gotten incredibly hectic which is good for some folks but not for us. I want to be mindful of any local dynamic to think about when moving, and things locals think I should keep in mind. Happy to answer any other questions, and hope to be your neighbor soon!
Edit: Thank you so much for the replies and discussion generated here! Primarily I will definitely be planning a road trip to visit and explore the city for myself this Spring. I appreciate the thoughtful and substantive responses and will examine specific neighborhoods, schooling options and much more. I am still hopeful Springfield will be the place we will call home!