Would love to know what is considered "non-serious cases". I personally know over 100 people in my immediate circle, who have had Covid19, and AFAIK none have any issues BH (may it continue so).
Secondly, what is your proposition for what we as a society/country should do long term?
Not all damage is visible, and I highly doubt 80% of your immediate circle knows what their body feels like at 100%. Almost all of us have become accustomed to the various aches and pains we deal with on a regular basis, and seemingly minor variances won't really catch our attention. Personally, if I have a day where my body feels especially good, it catches my attention more than if I slept funny, or not enough, or pulled something, or ate something that didn't quite work for me. We're used to writing off the minor discomforts in our lives.
Secondly, I don't believe a long term plan is necessary, given the advances in medicine we see on a regular basis. However, I've written my opinion on short-term solutions I'd like to see, including mandatory masks, capacity limits for all indoor businesses, closing dine-in restaurants, bars, entertainment venues, conferences, and trade shows, regular testing of any public-facing workers, and tax incentives for businesses who allow employees to work from home and create minimal contact business models (curbside pickup, etc.).