AdamRBi said:
Problem with that is, unlike the pattern held up by Water/Fire/Grass, Psychic type moves can't hurt Darks at all. Nothing, nada, Zero damage done. And by recent standards (where you gain a second type that is an advantage over your rival/become weak against the type you're powerful against) the psychic type would be at a greater disadvantage. Much more then Bulbasaur is to Charmander.
This is the same issue with Dark/Psychic/Ghost, as Ghosts aren't weak against psychic. The triangle they have now is simple to understand and simple to use especially for children playing Pokemon so they wouldn't change it.
Now those as secondary types to the starters as they reach their 3rd evolution? That'd be pretty cool.
In principal I agree with you, but with Water/Steel along with Ground/Grass coming into play, I would say that the starter triangle principle has already been broken and thus a new broken triangle wouldn't be amiss. Psychic not hurting Dark shouldn't matter as it still plays to the "being weak to" principle, just slightly more accentuated. Your example of a differing triangle doesn't however and has no place.
Simplicity shouldn't factor either, this is the fifth generation of these creatures and it would be a safe bet that anyone who will be interested is interested already and with Pokemon being heavily populated by competitive play I think an increase in depth/complexity (not that changing starters really is) wouldn't really alienate anyone.
The real reason there won't be a change is laziness and reluctance. I dont blame Game Freak, I'm just disappointed. Even though those images aren't real, you can still imagine them being similar to what has been conceived - except maybe the water pig being the grass type.
