Hi, henessy
First, Pokerstars do not offer rakeback deal( you get rakeback through bonuses from VIP Store and for that you don't need to have tracked account).
Accounts can not be re-tracked, meaning that if you already have Pokerstars account, you won't be able to collect Strategy Points by playing at Pokerstars.
However, Pokerstrategy.com offers nice first deposit bonuses and rakeback deals at a lot of
poker rooms. And i can assure you that most of them are not "who knows what little platform"
If you have any more questions, don't hesitate to ask
Regards,
Ignas