Perhaps a Stupid Question

I have a Pioneer PL-530 turntable. Am the original owner (bought in the 70's). After a few different cartridges over the years I am now using a Grado Gold (MM). The table still operates very well and would like to keep it and optimize it's performance if possible. Here's my question.....

The cable (IC) of the Pioneer is hardwired into the table. Would upgrading the cable offer any benefit to the performance? I understand that turntable cables are matched to a certain machine as far as resistance and other things. Cleaning of the RCA plugs and ground is the first thing to consider. However, as much has been discussed in these forums about cables it's hard to believe whether they are a significant improvement in this scenario or not. Maybe the Pioneer is offering as much performance as it can? Remember, this cable is hardwired into the board. Some may have had similar experiences.
Please forgive me for being blunt....I know there are much superior tables and cartridges out there. I already know that. Just seeking advice from someone who may have gone down this road.Thanks.