I personally don't think that MLK Parkway's old school design is a big deal to worry about. I can't recall any significant accidents to deem ramps 'unsafe'. We live in a "modernize everything, even if it's not necessarily broken" society. I been though MLK a billion times, and never had any issues getting off and on Pearl, Main Boulevard etc. If an A-hole is determined to not let you in a merging area, it can happen on I-10 & Chafee, or Pearl & MLK.