An animated Brush Similar to Tv paint would be nice
Could you describe this a bit more?
Sounds interesting but I have no idea what.
Are you saying like make a brush stroke and it automatically animates your pen stroke over a set period?
Check out this page from Tv paint
http://www.tvpaint.com/v2/content/article/support/tuto.php
click on the animated brush tutorial. That is badass.