no company will provide any info of possible exchanges pre ico. Several things could go wrong post ico and if investors feel jaded that a promise wasn't delivered, it could really impact the company's reputation
Actually some compaines are doing that. But you're right it's risky.
About vibehub it already reached 4600 eth, so exchange won't be a shitty one.
That's quite a good amount so far. Much lower than the max cap of 115000 ETH though - if it ever got closer to the cap, that would be a guaranteed acceptance on any exchanges of their choosing.
Exchanges are the most unimportant in the development process. Its only important for standard cryptocurrencies, not for projects with a real market usecase (Unless you are a trader).
I don't agree this. Maybe i can agree in long term exchanges are not important, because if a project is doing great, best exchanges want to add it even they don't apply for it. But short term and maybe middle term exchanges is the most efficent thing that will determine the price of coin. Crappy exchanges with low demand will bring the coins price down. Good exchanges with good demand will bring coin price up.