This feature is not feasible because the limits will surely scare away whale investors since their money will be forced to lock while they need 10 days just to withdraw it completely.

Restricting the ability to withdraw fully is not the key to grow the price but rather have a good project is the simple way to make investors hold and trust that it will grow in the future. Your idea is forcefully make investors to hold which is not good because not all people is a fanatic of holding.