The first is that as I've said in the past, except for teams where slightly increasing the skills of their players is very, very valuable, a level 7 trainer probably loses them money, since that money would be better spent improving their players via the transfer market.
Can U explain me (or somebody else) this part? I suppose U refer to training programs. For example, one of my players is in the U21 NT... I don't have the money to hire a Lv 7 Trainer... My arena is just over the 6000 seats... and I have only 9 players... and three trainables guys... All because I want to promote... but, as I say before, the new system is no bad but U need money... lot of money...
When you buy a level 7 trainer, the idea is that your players receive more training than they would with a level 5 trainer. However, this comes at a cost: first, sinking a pile of money to buy the trainer, and then paying a significantly higher wage every week.
The bottom line is that from the point of view of making money, it is probably more effective to buy a level 5 trainer, and keep the extra money that you would have paid for the level 7 trainer.
That's, of course, if you're a masochist and you want to pay double for a minimal percentage increase in training.
"I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve."