My personal opinion is that the NEW MARKET is a 2 sided coin...
Since the introduction of NEW MARKET I have been buying 4 star super fast trainers only...Since no one is bidding for them I brought all of them for only 1 token...And in no time they became 5 star...

I have also buyed 3 star young players with SA for 1 token this will decrease my overall rating of the team resulting in easier CUP and to some extent easier CHAMPIONS league draw...and as the NEW SEASON starts I will sell my SA 3 star players which will result in bidding wars(because they will be available to lower level managers as 5 star)...So you can easily exploit this new MARKET...

The downfall is the inability to sell your 3,4 star players...You will have to wait for them to become 2 stars...
Another is buying a 5 star player is just non feasible for me because of lack of them resulting in bidding wars...
And if you want a 5 star player for particular position you will have to search for him day in and day out...
Very rare 5 star fast trainers are available...I have only seen 3 this whole season...