There is some possibility that market can try here to make another huge wave up, as analogy to the history of chart (BTCUSD). But is this playable? I think if yes, the trader should now accumulate few altcoins (maybe 10 maybe little more) on arbitrage basis (accumulation fast for free), because there are some risks that this "wave 5" will not occur, but if it will, altcoins as a whole can make massive gain, much bigger than Bitcoin itself. Those traders, who not practice arbitrage trading cansimply decide to accumulate the chosen alts (like Cardano, XEM, TRON etc.) for 1 or few percent of trading capital and cashout if huge bump to new ATH will occur. Huge number of alts have own buy signals from January or February, based on my method, that i've showed on XEMUSD chart (see related ideas to that idea).
What can be the root of that massive upmove in crypto? One thing - temporary collaps of world financial system (around half of this year or in the second half of this year). There are some signs that this collaps can happen. But of course it should be temporary in nature. The real collaps will occur around 2025 year - but that is only my opinion.
The red line in June 2019 is only possibility of making new highs (with two months forward or backward from this line as a time area so between April-August time area) and basing on ermanometric analogy from the past, so it is not prediction only possibility.