Putting a maximum also implies a centralized decision on the value of each token. I find it better that the market decides the price per token, especially in a project focused on decentralization.
Because it is not really necessary as the investors will decide of the price of NVOT.
What I understand is,
(1) Unlimited market capital collected through crowd sale results into higher face valued NVOT.
(2) Higher face value of NVOT is created with just an idea in white paper.
(3) Unless more people buy NVOT from Exchanges, dumping high face valued NVOT will be a capital loss for crowd sale investor.
The main difference between NVO and other projects with defined crowd fund is, face value of other's token will be lower - and hence public will buy more from Exchanges. Thus crowd fund investor can sell tokens rather quick with better profit %.(4) As there is no dumping, there will be market stability for NVO.
Risk factor for a crowd sale investor depends on public's response to high valued NVOT at Exchanges and how NVO team meets deliverables.