Hello! I am new here, but I am the sort of player who shows his love for a game by thinking of additions. And in this case, I do like the Lost Launcher conceptually, but I wish it had a unique niche that isn't better served by equivalent mono-blue or even mono-purple towers. Specifically, I wish it had something that feels Lost Souls in nature. Thus I would like to put forward this suggested addition:
Active ability: Revenant's Tomb - 50 power - Haunts the structure permanently. Once destroyed, instead of the power going to the void, a ghost of the structure is created in its space. The ghost cannot be targeted, doesn't provide ground presence, and it can fight (though it doesn't get its affinity passive and has reduced damage), and lasts for 25 seconds. Once that time is up, if you have ground presence in the area, the tower is resummoned, though without the haunting, and its HP depends on how much time the ghost spent not fighting. If no ground presence, the tower dies, and the void power is refunded.