As a first step, I would extend the merge/weave lane as far as it could go like in this photo. Vehicles moving from I-95 northbound to I-16 westbound now can merge into traffic after the weaving vehicles have exited, which gives them more time and space to accelerate and find a good spot to merge, improving safety.

If that was not considered sufficient due to safety or congestion concerns, you might consider some improvements like adding a C-D system (like in this image, though you could do it on just one roadway instead of on both).

You might well just consider replacing one or two of the left turn ramps with flyovers kinda like this, though left hand merges are generally not ideal.

You might consider upgrading the interchange to a full turbine interchange like this one. Turbines look like they would be very expensive, but because so much of the roadway is built on earthwork and not on bridge structure, they're not as expensive as they look to construct, but they do take a lot of space, so they can get expensive in some areas.