Labels are labels. Training as a mechanic for example is simply a trade - you give, on average, 3/6/9% condition in exchange for some sp. As Peter said there's an injury chance and that is applied (in whatever way you prefer, factors or no), the duration is rolled and an injury 'comment' appropriate for that range is looked up.

At the moment I'm going through a lucky run - last Season I had around 9 injuries in competitive matches; this Season I've had 5 so far. Thats 14 injuries in a Season and a half which is good for me - but the bad side ofc is who gets injured. My right winger has now been injured 4 times in that period and the GK and MC twice each - 8/14 on 3 players.

I doubt they'll reduce the range of injuries in severity for each training type and it wouldn't make sense to me either - spamming a lower risk/rate training type woud ensue.

But yeah, better labels please.