Do you guys not think that Exchanges should add more tradingpairs, besides BTC, ETH and LTC? If we look at international currencies we see that most of these have quite a bit of pairings which makes a lot of sense in terms of monopolisation and market safety.
I'd love to see exchanges like Bitstamp and GDAX add more trading pairs. I need more exposure to altcoins, and I'm less comfortable everyday with Poloniex and Bittrex. Obviously, the exchanges are primarily concerned about legalities (especially with ICO tokens) and with liquidity. After GDAX's flash crash fiasco earlier in the year, I can imagine they are treading carefully when considering adding new coins.
If BTC crashes, it would take down a lot of alts with it, even though I currently (since 10k btc milestone) don't think this needs to happen, BTC, ETH are quite experimental and though i'm bullish on BTC for the longterm it does show that it doesn't scale well, same as Ethereum and this cryptokitty fiasco this week. It takes 1 app to go viral and the whole network becomes unusable. But they have proven the ideology and principles of the technology.
Indeed, Ethereum in particular has a serious scaling problem that must be overcome by sharding or some other radical change to its consensus system. In general, I think that the market has partially priced in the growing pains and the fact that they will take years to overcome. The rest is hype.
But the biggest issue would really be, what extra pairs can you add? We're still a tiny dot in comparison to global markets. Most currency's are multi trillion and we aren't even at a trillion marketcap as a whole. Myself I was thinking about, Dash, ADA, Monero and NEM as diversification of trading pairs.
I think the recent BTC forks (Cash and Gold) show that market cap is a poor fundamental predictor. Forking an active network doesn't transfer that network's value to the fork automatically, but market cap acts that way.
We need to look at sustained price/market cap in addition to other factors -- a coin's community, market interest (are exchange customers clamoring for it?), hash rate etc. Does it have real use cases, and is it innovative? Does it potentially fill a market niche? Sector analyzation is becoming increasingly important. I can see privacy coins and DEX coins are two areas that will grow immensely in the next year or two.