Giving singed some depth

While watching a multitude of singed players, I began to think of different ways of giving singed a bit more depth as "The Mad Chemist". We all know that his poison trail is the most iconic ability he has, but what if through the game you were able to augment the trail by purchasing black market chemicals from the shop. Early on you would have access to chemicals that say, extend the length of your chem trail, make the chem trail wider, or make the gas more toxic dealing a bit more damage. Then later in the game you would gain access to more dangerous chemicals, such as a an adhesive gas which has a natural slow on enemies, a type of gas which heals your allies who stand in the gas, or a gas that expands in size before disappearing. And my favorite idea, different caps to put on your gas tank which effect what happens when you start using your gas, or stop using your gas. -pressure cap, a cap that builds pressure inside the tank, so when you turn poison on, the poison bursts out in a circle around singed. -spark cap, a cap that lights your gas trail on fire when you cap off your gas trail.

These are just some basic Ideas, and if you really wanted to make singed a truely mad chemist. I'd love to hear other opinions on these ideas.