1. Increasing along the ascending line is certainly positive, but the resolution may have already come with the indecisive wick on high yesterday.
2. If strength remains, the levels shown are likely areas for considerable supply - with ~$1.50 being a potential high (bar any exuberance) in the current market.
3. Typically in bear/neutral crypto markets, these ascending lines (though they look good because of #1. above) don't last to resolve as an and instead develop in to rectangles.
4. Likely more because humans like to see patterns in nothing, but an interesting note because of the similar we see for each candles/locations in the trends established.
Regarding how I think about these levels compared to the ZRXBTC chart, I think it remains to be seen how being on an exchange with a real fiat on ramp will affect interpretation of ZRX by BTC/USD. The following chart relates these prices if BTCUSD remains at similar levels. 10k Sats is a very attractive level for risk-limited entries for a long-thesis for 0x, which is around $0.60-0.65, an important level for a floor of the current trend established in the ZRXUSD chart.
Some also like to consider ERC20 tokens vs. the ETH charts - which might add further implication in your analysis. But I like to think - what do people need to use to purchase the given coin/token? For ICOs and that phase, it's ETHUSD , which saw the huge pump likely due to this. For a new listing on Coinbase - again, if there is a significant part of the market that hasn't entered #ZRX yet but wants to, via Coinbase, what will they be using it to enter? LIkely USD, which is also the quoted price in Coinbase, so I think the ZRXUSD chart will be the most important one informing on important levels for the time being. ZRXETH may give some indication of differential interest between the two in the coming months.
Not that it's highly relevant, but we could compare ZRXBTC listing to ETCBTC listing on Coinbase on August 7th 2018:
As you can see, however, trend strength leading up to listing is very weak, so consider the comparison with a grain of salt. Not to mention 0x is a completely novel protocol and it's fiat price will be under $1.00 on Coinbase, with important psychological implications for this when your average investor/trader sees it appear on Coinbase. Food for thought.