I'm just going to get straight to the ideas to buff her. Although she is really balanced rn, her key designs with respect to her utilities are why people don't use her. As a controller the most basic tactic is to smoke heaven on a bomb site. While I can smoke of many heaven windows like, split b (toxic orb), heaven a (toxic orb), bind a (toxic orb), split a (toxic screen), the only useful change I see here with respect to toxic orb is to retract it similar to Killjoy retracting her bots. As for her toxic screen, many times enemies never respect this as it barely does any damage (negligible). Hence enemies passing the toxic wall either take permanent damage similar to Phoenix blaze wall, or get vulnerable status. None of that wall retraction bs, which will make her broken.

Another idea although it may seem broken is not to revert decay damage, unless in vipers pit.

That's all folks let me know what y'all think!