could you explain this with a bit more detail? I'm afraid i don't really get your point.
If there are features in GTM that you would like to incorporate into your project - feel free to do so. It's all GPL'd, so just take, copy and/or adapt whatever you need, or find useful! (I "borrowed" a lot of "my" code for GTM from Viktor's SIGE plugin, asked him, and he's fine with that. And that's how it should be.)
( to quote my favourite band from Seattle: "It's evolution, baby!" )
If there are features missing that you would like to see in a next release - I'm open to new suggestions!