Since Android is open source and in order for it to be included in all phones it would have to be tested on all versions of Android, pass inspection with all device manufacturers and carriers, it would be a very hard task to just say that it will be easy to implement for all phones and be installed by default.
I can see why you dont want to say, but in all honesty, it also has to be something that can be removed or opted out from as well. While it may seem like a great idea to you, that doesnt mean that the ever growing user base of Android users will feel the same way. With the extent of Android Market apps growing are you sure that this idea is already out there? Have you checked sites like XDA and Android Central to make sure that someone isnt already developing such an App?
Your best bet will be to develop it as an App and offer it up for sale. There is no way you can be sure that it is something that everyone would want. Not to mention passing Google, Device Manufacturer and Carriers is a task all on its own. Trying to get past AT&T, Verizon, Sprint, T-Mobile, Boost and all the others, just in the States alone is a huge task. Just look how long it has taken Samsung to push out Gingerbread onto its devices. Trying to get something included in all devices is a major task. You will have to contact Samsung, Google, Motorola, Nexus just to name a few to see if they would even be willing to listen to such an idea of including such software.