On one note this is good news, but on the other note, it will reduce the value of our membership status, when more people get gold and diamond status.

What I would really like to see is rollover of unused base points like with the Club Carlson nights and stays or rolling earning periods. And yes, I know this will reduce the value of the membership too, but this way you are rewarding people that are actually flying, rather than people that are on standby for one reason or another.
My travel depends a lot on the clients I'm assigned too. Over the last 5 years, I've missed gold status by less than 5000 points at least twice, and last year I got enough points to secure Diamond and Gold on top, but I haven't been on a single trip this year so far.

Is it fair that people that managed to secure gold 10 years in a row, and then don't even make silver, are keeping their gold status for life

I know it's a difficult to build a fair program, but it seams that SAS is more focused on getting more members at gold or diamond level, than increasing the value of the levels.