Improvement of Brushes for digital painting

I've been using Photoshop for over 15 years for painting and illustration, and it used to be that this was the best and only usable program for it. However, over the recent years, programs like ArtRage and ProCreate are giving Photoshop a run for their money, and particularly in the brush department they are by now outperforming Photoshop. Whatever you do, in Photoshop the oil brushes or chalk or watercolor brushes etc never look real, neither do they behave according to for instance the color transfer or mix of oils, watercolors etc. ArtRage is a fairly inexpensive program and a bit basic, but it does a much more satisfying job at this---and therefore I'm asking here, Adobe could you please take a look at how they do it and then improve your brush functions, and expand the options of how a brush stroke is displayed, for example paint load, brush hair textures, mixing color by overpainting etc. I suggest you take a look at ArtRage and you will see what I mean. Also, there is zero lag on any of the brushes there, which isn't always the case in Photoshop, particularly with smoothing active. An improvement would be greatly appreciated!