..... I am certain that it will have some negative impact as the only thing it does for most teams is to complicate the transfer without added value/fun.
Well we don't know what is going to happen, exactly. I agree with you that it would be better if this were the case. It would also help average teams in smaller countries who don't have a lot of foreign players, of which there are many many many teams. I checked around in Spain's second divisions, in Italy's second divisions and there are lots of teams with over 50% domestic players. In Thailand, there are only five or six teams that have even 1 foreign player, so if it is a reduction in salary for domestic players, the teams behind the division leaders will be helped out a lot.