As someone that has a low end contractors saw, options for upgrades are either extremely limited or simply non-existent. They simply aren't designed to use 99% of aftermarket products due to how the fences are built and attached to the saw, and built and with T style miter tracks rather than the more common slot.
I picked up a low end Ryobi contractor table saw about 6 months ago and I've had nothing but frustration when trying to use it, opting to use an edge guide and circular saw to make most of the cuts I would have likely made on the table saw. It just takes so much longer to setup the janky fence to make a relatively precise cut (even then the fence flexes most of the time during the cut) vs clamping an edge guide and hitting it with the circular saw.
I spent over a month trying to find ways to make my TS passable to no avail, so I've been prepping my shop space to buy a 'big boy' Sawstop PCS towards the end of the year as I would rather spend more money to have a quality product vs trying to spend time and money trying to make an inferior product work how it should to begin with. I want to build, not constantly have to fuss and jack with my tools and then pray for a quality or precise cut.
I'm not saying you won't have better luck than I did, but I guess it really boils down to what your time is worth and how much you want to mess with your tools rather than just using them.
To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment.
~Ralph Waldo Emerson