Keith
Your Canon is an Olympus.
Olympus (as well as Canon) cameras have indeed being used by professionals, however not of the type you have.
Basically a Toyota Camry does not compete in the Formula One Grand Prix, other Toyotas do..
Not to elaborate too much on this but the factory that makes compact cameras like that Stylus (most probably Sanyo) is not the same as the one that makes the Pro Olympus models (usually but not always Olympus)

If a new camera in your price range is going to be better or not is up to you to determine.
In a way if you are happy with what you have, keep it.
No I would not want to have a compact digital camera repaired unless it is of sentimental value.
Most likely for what you paid for yours , you will get a better camera now, however not around $100.
The biggest improvement that has trickled down to basic models in the last few years has been in the firmware and the processing engine.(more powerful on board computer)
What that means is that cameras are now much better at "photoshopping" your image before you see it.
So colours are more natural, low light shots are better rendered, lines are straighter and shot to shot speed is better.
Do keep in mind, when you compare , that most often what we think we have in our photo albums (computer files) as far as detail/sharpness,colours is concerned and what we actually have may not correspond.
Maybe if you tell us what you like and what you don't like about your camera and give us an idea of your budget, some may be able to help you.
(I sold cameras for 30 years...)
Franco