$2 is getting more visible as we've seen 19000sats of onion yesterday.
Indeed, big investors will need bigger volumes in order to process their trades. We are now above 13 BTC in last 24 hours, which is a very nice increase, but it would be a size of one trade for some bigger investors. I think that before Q2/2018, some mid-sized exchanges can be achievable and also suitable for us. I have seen some DeepDomination task on our forum which was related to voting for listing on Mercatox. It is a bit smaller exchange than Cryptopia, but still much bigger than Stocks.Exchange.
The exchange isn't a problem, Cryptopia is fine. The problem is the number of $Onions available to buy. No one wants to sell them so it impact the volume of trade.