While I agree, I don't think it's necessary
To be honest, maybe it will take two more updates, or maybe just the next one, for us to reach our 4th evolution. Although the way things are going, it's possible that at the climax of the last update we'll reach our 4th, in a possible fight between Mc and Indra, who, my friends, is the bastard I most want to kill.
And it would be a lie to say that I don't want to see Mc reach his 4th evolution, it's something we all want and long for. But it's quite possible that we'll continue like this, training our skills even more, especially the Memory Trait