What do you mean by not freezing the tokens?
When will you send the tokens to investors? It should be done after the token sale ends. Right?
So, investors should wait 2 years for something that they pay for it today. There are many other projects that can make profit investors very earlier. Why should some one wait 2 years?
Even if you work on the project and it is developed, but there is no profit for investors.
Maybe mean that you will send the tokens to investors right after their investment. If you mean this, It also has a bad effect. Because the tokens might be traded at lower price than ICO price on decentralized exchanges.