Wait... So you're planning to withheld such crucial information that'll help people determine the profitability --well, possible profitability-- of your project and what they'll get upon investing on you, and decide to let them join private sale --and possibility latter, suppose the info is still not made public during public sale-- based on faith?
I am failed to see the logical reason or the benefits of withholding such info if those information is ready and available --you have those details on your initial concept, right?-- as those info can be really helpful for investors to estimate your project.
Such info is not important now, it's important later after the testnet launch so that people know how much fees are paying when trading and not now when they need more informations about how the protocol works and the features and informations about the token sale.
Arguably not important, some would think it is rather crucial for decision making. No matter what people think, there's no harm in providing that info. It is easy --easier than typing excuses and evasion like you keep doing-- and readily available as it should've been on your core strategy