
It would be too easy if there was only one good answer and one bad one. But it doesn't work like that : it depends... how much it sings to your heart, how many other projects you have on the way, how deep are your pockets... I know only one thing : for me in spite of its obvious attractivity it would have been NO also.
"Choosing is renouncing" (André Gide) ; I am sure you knew this one was coming as this is one of my fav' motos.
And as for me specially this year more than ever, I have renounced to some but I have also decided for a few very very exciting others.
So there is no frustration at all, just satisfaction when I think of the ones that have been elected
.
Best,
Mike

And I need a reserve if one of them of them is away for service 

You might never get there...