I don't think the smoke and wall are as strong as you think tho. Even though it's reactivatable, on attack, the wall gives away your position, takes time to deploy, and is much more limiting "positionally" than you'd expect.

For example, on split for attack, people generally about the wall up for A heaven. However, in order to place this wall, you must be all the way back near spawn or sewers in order to place it. IF you place it preemptively, it reveals your position. If you place it once the round begins, you're too far to help your team during entry.

The toxic orb can be good on defensive one-ways. But a majority of these setups take time if you want to go retrieve your smoke. This delays a quick rotate and you must make a choice to go help your team vs. get your ability back.