I don't have enough technical information about rocket motors but I read in several sources that Iran's rocket motors ''are inferior against Russian and American rocket motors in quality and Iranian rocket motors creates more and darker / thicker smoke'' Might be just propaganda but normally Iran chooses Quantity - Cheaper price over qualty so it is not a bad thing. It is just a doctrine.
For Turkey. Yes Hisar-A creates very clean smoke, I hope we will continue this until Siper but still it is hard to tell after all Siper is not ready yet. But when you think in our doctrine we produce the best product we can produce, even if it is much more expensive, I really believe Siper will be one of its kind. Anyway, time will tell.
I agree we don't know what will happen after Trump. But I still believe it will take more time...