i'm a bit surprised about this. because you suggested that i include the delegation there...
and the model with sps i have done several counter calculations. the result is a much worse ratio between effectiveness/and side effects on legitimate players and investors. so not really effective!!
apart from the fact that i don't think many whales would get involved in such dubious deals. let's do the math. you could feed 1070 bronze accounts with your cards. but with your proposed sps option you could feed 98140 accounts.
to achieve a similarly effective result, you would have to go so high with the sps requirements that the hurdles for players would be far too high and the game would very likely not survive this.