There are many ways to help improve the toolobx, the most important one being the easiest: simply let us know what you think. Also, if you run into a bug or any other issue, [reporting problems|report it]!
The M3-toolbox is research software, and while we do our best to document everything, there are things we have forgotten to mention or simply haven't had time to write down yet. If you run into any such things please feel free to contribute to this website by logging in.
We are always on the lookout for interesting data sets, mathematical functions, simulator codes, ... that we can use to test and improve the toolbox. So if you have any such examples that you wish to share, please contact us and we will gladly include it with the standard distribution (with proper references and acknowledgments of course)
Likewise, if you have integrated some particular model type, modeling algorithm, sample selection algorithm, ... and you would like to share it with the rest of the world, again just let us know.