You might need to define what you mean by "convincingly".
I'm going to go out on a limb and assume what you're finding is that velocity-mapped staccatos for the the 16ths sound fine but when you want the same kind of attack on a longer note, the articulations available don't make that possible. Is that right?
You also have the issue that you can't get these articulations into the same DAW lane. That is going to be tricky with different libraries and a lot depends on the DAW. Weirdly, though it's broadly not a great choice for orchestral work, Ableton Live's racks make it possible to combine multiple instruments in a single track and use automation to switch between them. I don't think Studio One does that but could be wrong as I have almost zero knowledge of what's in Studio One.
However, if your core issue is wrangling articulations, the lack of one-lane control may simply be a side issue that you just have to live with. This is particularly true if you need better control over the sustain patches as one technique for getting a sharper attack on a longer note is to simply trigger a short and long at the same time, with the short at a lower velocity to prevent it sticking out too far. For that reason alone, you're going to need more than one DAW lane.
However, before you are presented with a rapidly growing shopping list, it would be better if you can go through the problems you're having. For example, you may find that some of your issues are more due to orchestration choices that make the shortcomings of the sample libraries more obvious.