I'm really hoping the devs release something that allows for quickly and easily making any asset ploppable without having to turn it into a park. Or if it's a mod, that would be perfectly fine too, just as long as it works.
Right now I have Five Guys Burgers buildings popping up everywhere. I like the building and I like the sense of realism it adds having real-life businesses show up, but they're showing up side by side all over the place. One strip of commercial zones I counted six or seven of them within a two-block stretch.
That's just one of many examples why it would be incredibly helpful to be able to manually plop any building you want. You could still zone wherever you want and let things grow as they normally do, but you can also take a greater role in really sculpting the block around those things.