I've been thinking about how easy Issho managed to get the Warlord system abolished, and it led me to remember Yamamoto Kansuke.
This is Yamamoto Kansuke, a one eyed strategist, Samurai, and one of Takeda Shingen's 24 generals. Earlier in his life, he had gone through a pilgrimage which saw him amass knowledge as a warrior and tactician. He was fiercely loyal to Shingen, whom trusted his capabilities. He launched a successful assault, yet suicidal assault against the Uesugi clan during the 4th battle of Kawanakajima. Unfortunately, as mentioned, he gave his life to accomplish the mission.
Both Issho and Kansuke were well versed and seasoned before they joined their respective military units. And both are quite shrewed and strategic. I've also been thinking about how many tabs he keeps on Vegapunk and his weapons. I don't think these weapons, if they are used, will just be to eliminate the Warlords, nor do I think it will be as easy as just aiding the current WG structure. All I hope is Issho doesn't mount a suicide run.