I was in a similar spot with mine when I bought it. Plenty of power but beeded a little something special. Pipe filter and tune were already done.
Ergonomics and quality of life stuff are super underrated and make a big difference.
Bars with less sweep so they aren't hitting your thighs when you are leaning, good grips and pegs, and a direct shifter are all cheap, easy, and make a big difference in how the machine feels.
This time of year better lighting is a great thing for rides that go a little longer than planned, and can be a style change too.
Noticed the seat cover is torn, you can get custom covers cheap and it's not too hard to change, again a way you could personalize the look of the machine.
Suspension mods can make a world of difference but this is where you start going from cheap and easy to expensive or/and custom.
Making the machine more comfortable rather than more fast will actually make it alot easier to use the power you have, making you faster anyways. And even if it doesn't, keeping yourself from getting wore out half way through a ride or sore the next day is always a welcome improvement