Actually, the original nukes did destroy OPs and kill all units on it. And funny story about that! The VERY first nuke launched and landed on BD, destroyed the entire world. Michael forgot to program parameters and so when it landed, it destroyed EVERYTHING on the world.
As for the idea, i honestly find nukes underwhelming at the moment. I wish there were more/better uses for them. You shouldn't need to ion nukes often. Minimum of 6 ticks to land is a lot of time to dodge.