Two issues that i never understood: pen silo and pen battery. Full size pens need full size silos which create design issues. I replace my ntrig batteries about once a year: whats the problem?
I never understood your argument, having a smaller stylus in a silo makes it convenient for traveling and always having the stylus with you. You have the choice to purchase a full size stylus to carry separately and use. I can't tell you the amount of times I've needed my SP3 stylus, but only to find I left it at home.
As for battery I don't have an issue with it, other than it makes the pen larger and makes it impossible to make a smaller version to fit in a silo.