Why I do not like to use "system" in the given context ist explained by the definition.
Definition: System
System
Noun
1. A group of independent but interrelated elements comprising a unified whole; "a vast system of production and distribution and consumption keep the country going".
2. Instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity; "he bought a new stereo system"; "the unit consists of a motor and a small computer".
3. A complex of methods or rules governing behavior; "they have to operate under a system they oppose"; "that language has a complex system for indicating gender".
4. A procedure or process for obtaining an objective; "they had to devise a system that did not depend on cooperation".
5. A group of physiologically or anatomically related organs or parts; "the body has a system of organs for digestion".
http://www.websters-dictionary-online.org/definition/system