Why is the brush tool in Illustrator CC inferior to the brush tool in CS6? It has less control of fidelity and smoothness. It is terrible - and I'm an illustrator. Can I use the CS6 brush engin in CC?

Question

I loved the brush tool in CS6 Illustrator- by turning fidelity to the lowest setting, and smoothness down to zero, pumping up pressure sensitivity, it accurately reproduced the fine shapes of a drawn stroke. I'm an illustrator, so I don't want artificially smoothed curves, I want the line I drew.
This works really well with my Wacom Cintiq tablet... but now CC has removed this level of customisation for the brush tool. WHY? The program is called Illustrator, and as an illustrator, I can tell you having an accurate and finely adjustable brush engine to illustrate with is very important to me and to lots of other people who can draw, and draw for a living.
Now you get this dumbed down control panel when you double click on the brush tool icon- just one slider, with only 4 steps from 'accurate' (not very) to 'smooth' (almost indistiguishable from 'accurate')... it is like I have contracted a nerve disease - I draw a line, and it forms into something quite different to the path my pen took. WHY? Can I get rid of this rubbish engine? Trying the blob brush - what is the point of this brush? It is just like the old brush, except for a cursor that shows the largest size for pressure sensitivity... and it has the same crude 4 step smooth/accurate adjuster, that doesn't change the line much at all. I have the latest driver in my Cintiq, so I don't think that is the issue, and CS6 works better than CC.
I am very disappointed, Adobe. Do I have to go back to CS6 for all my Illustration work? Please improve the CC brush tool controls.
I am still reeling from Adobe's quiet removal of a whole tool: Inverse Kinematics/Bone tool from Flash CC JUST when I was finally using it to animate, but that's another story.
Honestly, having use them for a while, Photoshop,
Illlustrator, InDesign and Flash CC are, as far as I can tell, no step up at all from CS6, except that you have to pay for them forever.

Answer 1

More on this, now becoming known as the CC pencil tool fiasco, on these fora:
Re: PLEASE PLEASE adobe. The new pencil tool has become unusuble to me
Re: Changing line fidelity with CS6 Brush Tool
Re: All pressure sensitive brush presets gone!
If you are affected by the lower accuracy controls for CC's brush or pencil tools, use this Bug report/Feature request form to let the folks at Adobe know- they are actually hopefully going to fix this.......
thanks to Daniel for setting this up:
hey all, if you are going to file a bug report (as per Neeraj's suggestion), i've made up a draft to make the process easier.  feel free to adjust it as much as you want, obviously; trying to equip us busy folk.
Obviously customer service & product development are two different departments, so if you're bummin out on the new functionality, submit a bug report!
link to submit bug report:
https://www.adobe.com/cfusion/mmform/index.cfm?name=wishform
******BUG******
Concise problem statement:
I was told to by Neeraj N(staff) to report this issue based on this link : (http://forums.adobe.com/message/6065706).
The Pencil / Brush tools have lost essential functionality with the addition of the new accurate / smooth adjustment preset. Users are no longer able to specify high-accuracy pen mapping, as the finest accuracy setting is now set to 2.5px (legacy versions allowed accuracy to .5px).
I would think adding additional slider nodes to allow more accurate mapping (while still using the accurate / smooth preset) allow for a minimal change in programming with a maximum return for power users.
Steps to reproduce bug:
1. open illustrator
2. use either pencil or brush tool.
3. draw erratic and high detail shapes
Results: shapes are smoothed to 2.5px smoothness, even when the accurate / smooth adjustment preset is set to full accuracy.
Expected results: shapes have minimal / no smoothing to maintain the integrity of the artwork.
Thank you for your consideration.