Make spellblade items toggleable?

Make so they all have active that toggles their spellblade passive on or off. One reason for this is so if you build multiple spellblade items like gauntlet and triforce for example, only one can be active at a time and you can choose which one to activate given the situation. Like if you are Nasus and you want to maximize stacking without pushing the wave or killing other minions with the aoe of gauntlet, have triforce active, but if you want to chase someone down or be harder to kite, have gauntlet active. It just seems clunky that you can build all the spellblade items but they dont stack and there is a very specific priority for which one will actually take effect. I think it's lich bane first? . . . . . . . The real reason for this post is because I want to play runeglaive susan and I want to be able to toggle the passive to choose between lifestealing off my Q but probably doing less damage, or making my q do magic damage (likely more damage that way) but I wont lifesteal off of it.