[Viriato]

Ok!
I believe I understood all you said. I am making my own engine because I like to program (and it's starting to be a job) and I like my theme, which is just medieval and based on reality, and the pleasure is building it that way.
Don't have that much experience in coding/building to say I'll have much troubles later about balancing the game, but after your advice I'll think twice before implementing things, from now on.
Thank you and good luck