I did not invest just because I don't think they have a very strong development team though they have a number of successful busniesss team members. Without a solid development team, it is very hard to succeed in a high competitive crypto market nowadays.
We are talking about a project that has 2 early adopters that are already in the Forex Trading Industry and both are internationally successful.
Since they are building a trading platform, and since currently there is no solid platform based on blockchain technology, it would totally make sense to develop one.
Team Members as well developers can change at any time, I have seen this happening in multiple other projects like SIA, XRP, Litecoin. It all comes down to budget I guess.
Concluding trade.io Pre-ICO did great and ICO just started and it's looking great!