Johan,
I had an aortic valve replacement last year via TAVR.
Recovery was easy.
You should get a second opinion from a cardiologist at a major university medical center regarding method used to replace the valve. There are reasons to do open heart surgery , but it sounds like you could be a candidate for TAVR.
If you don’t have symptoms now you have time to get more information.
The echocardiogram will tell you what stage you are at now.
My cardiologist reminded me that stenosis will not get better- it will progress.
Before the surgery I got short of breath easily, tired easily and had to rest often.