Would it be possible to distribute the stakes slowly, lets say within 1 or 2 months time to avoid dumping too fast ?
I would not mind to wait for a while to get my stake.
This is clearly a good idea. I approve

Very bad idea. People who will get the coins later will get screwed, while early ones pocket the money selling coins. There will still be dumping, but only early ones would be making money, while those who come later will be left holding the bags,.
How would we trust the developers aren't picking themselves and their friends first? They are already getting 10% of stakes, so they will have plenty to sell while rest watch and wait.
If this system is adapted, I want to see provable/verifiable random mechanism. That is, Sha256 (BTT account ID) then use that result in a java's Math.random as a seed. No special favors for developers.
I taught that devs would be the last ones who wanted NEM to sink below all the crap-coins. And they probably know that it's much wiser to sell a bit later and slowly to keep the price higher, cause that is better for NEM and for their own wealth.
And some clever system like that "random mechanism" should be done if that's necessary for peace of mind.