Erwin, sounds like an excellent move. Its a pity that many more don't follow your example.
That way theres no losers, the movers gain and the few left behind get a worthwhile payrise.
I have not seen figures for average age for LAMEs. I am 60 and a bit, I work with a 65 year old avionics man. Our youngest I think is fortyish. I suppose I will keep going for as long as my Zimmer frame will get me round the airframe.
All my days are at least 14 hours so that would be no problem. half of the day is work and the other half spent sorting the paperwork that goes with it. I get a month off for a month worked and then I really get to know boredom, after a week I am ready to come back to work.