50 million dollars is quite an ambitious goal. I hope it will be backed up by appropriate communication and action. Otherwise I can't really see how you are going to reach that. Also, the undisclosed part is really bad. Why wouldn't you just say how much they paid? It gives newer investors the chance to judge how likely it is that they are being dumped on extraordinarily hard.
To add to this, the structure is unbelievably bad for early investors. If the token is issued immediately:
-Phase 1 already exists and can dump on Phase 2 holders at any time
-Phase 2 holders have an upper boundary of $.04/token and can be dumped on at any time
-Phase 3 has an upper boundary of $.05 and can be dumped on twice as hard, etc.
...
-If the bull market reverses at any point during the ICO (let's say Phase 5) and a tranche is undersold, the people who bought during the .06 phase might wind up owning twice as much at .03 per, meaning everyone else is instantly dumped on 4 times as hard
If the token is not issued immediately, investors are locked into holding for months/years. Filecoin can do that. You're not Filecoin.
This is one of the worst ICO formats I've seen yet. If it's not reworked, I will avoid it.