@Ogi: We didn't think we need to put the 100% number beside the old training types, but if other users think it's necessary, it's not hard to do. Also, if you're confused, ask, that's why we're here.
The question is whether it will be said straightforward how much slower players train due to two position training instead of the optimal one position. We know now - based on statistics - that for example training IS on positions PF/C is somewhere around 70%-80% of the speed with one position training. If we were given this information than we would be able to make decision on whether we are training two positions or one (not optimal) position - with consequences known.
Now most things regarding training is based on an estimation. However with this new feature that rule is removed to some extend. Will you be willing to unveil also a little bit concerning training on one position/two/three/team ?
And I disagree with your prognosis - I think many managers will use it.
Of course - it will be used out of curiosity. We are curious people. We will test it, try it, and then you will change the numbers (or change + hide) and we will test it and try it once again. Supporters will have the opportunity to try it in the team they care less about - Utopia or the regular one without possible negative consequences.
Don't get me wrong - I am very pleased with this training adjustment - but I believe also, that the disadvantage in training speed should be smaller - to make it in the middle of the gap between one position training/two positions/three/team. If for example team training gives 50% of one position training than training out of position should be closer to 75% than 50%.