My C100 trigger pin was also not staked quite that hard, and it pushed out with a punch by hand.
The problem comes in re-installation. If you leave one end slightly burred, you have much trouble reinstalling the trigger assembly and lining up the holes. Otherwise, I suppose you can sand down the end, slide it in (using slaves) and then stake it gently.
I prefer a roll pin - in this case 2mm because it seems to slide in easily enough but generates its 'own staking'. For some reason, the CZ is much easier to use a roll pin on, but again, you don't have to, as the CGW trigger pin is a dream.