Just so we're clear here, when I mentioned a 'total conversion', maybe that's not the right term for it. I don't wanna change anything in the game's mechanics (combat, spells, classes, gameplay in general, etc.). I just want to create a new story, with new characters and quests. Do you think that is doable?
That's a total convertion...if you look at the Sam's signature, he has been involved with one, the Classic Adventures. It's doable, for a one person, it's going to take it's sweet time though... but there is the original
BGT to testify that it can be done.
And you should take Daulmakan advice... try something simple
at first, and then expand from there on out.
Yeah, it's nice to have ideas, but to make them to real mods is harder than you would think, and the fact that they are hard can actually make it better when you succeed.
Now, take that as an advice that you should start small, but from there you can do a lot of great things if you put the time in and see what other people have done and how they did it. Also looking other peoples projects helps, but only if you can understand what they did... so and asking is always allowed, and encouraged.