I'm at the moment up to 630 experts for 10 vets on my future gunners (1.6%). This sucks,, I have lost more then 10 vets in that time.

It's supposed to be 10% success not 1.6%.

SUGGESTION 1:
There should be some guarantie. Like if you burn 100, 150 or maybe 200 experts on one sailor WITHOUT closing the sailor window you should get atleast one success.

SUGGESTION 2:
You should be able to gain 1 vet when you do a super critical hit on someone (in battle, not in mission) aswell as you can loose vets. This wont be enough for a good crew (you will still have to burn experts) but it might make up for a bit of the losses.
e.g. Yeasterday I lost 3vets on one of my primary gunners and some vets on other crew (bad day) and I think that it would be atleast a small chance of me getting 1vet back on one of MY super criticals.

//spectratos