I have to completely agree with ST2 here.
The 50 trains is part of why it's a hard goal. I you all use them 1-way and also use trains for short transfers, you can easily get to 50 trains and then have to wait a while to finish the game, but then it's completely your own fault for not finishing sooner, you have to be smart with how you use your trains.
Besides this, it's just a limit to this hard goal server. We could also just make it a completely flat map, have 500.000 GBP loans available and allow 10-tile trains or whatever. It will all help people finish faster, but that's totally besides the point.
If you have 1000 or more goods waiting, you clearly have too many farms connected and too little goods trains. And since goods have more profit, there's a balance issue.
Asking for harder servers but at the same time wanting to make our harder servers easier is a bit contradicting to me Mirime.