Normally if you see,higher GDP nations, they generally have better standard of living, quality of life and also respect nature quite well.

As for the economic system change you expect can be the circular economy. In a circular economy every product in the market is leased instead of sold and then recycled and again leased. This creates a chain of reduce, reuse and recycle and also keep the GDP running although at a much slower pace.

The GDP also includes debts as people want to buy debts, if you know the 2008 financial crisis was also caused due to high buying of house debts.

Anyway you are right, there is change needed but may be not as radical as you would like it to be and as for GDP, I think GDP has been defining a country's betterment in the best way including happiness, nature loving and etc,etc,etc.