Do you think we could do better than standard 6 stat setup ? If so what would add or take away ? For example a friend of mine hates how wisdom and intelligence are not just one stat.
I'm not a fan of Wisdom and Intelligence as different stats, either. Even though I've definitely met a lot of people with high Intelligence and low Wisdom - I think the hobby attracts them, actually - it's hard to break them down in an objective way such that everyone can always agree which task should be governed by which stat. If you have two different stats, but you can't agree which does which, then you're in a worse position than if you just have one stat which covers both.
My personal preference would be something like: Strength, Agility, Mind, Perception, Willpower.
Strength would cover both Strength and Constitution, to solve the current issue where everyone needs Con to an equal degree. Agility replaces Dexterity for the purposes of defense and skills. Mind would cover both Intelligence and the common sense aspect of Wisdom. Perception would get survival skills, but also be used for ranged attacks and initiative. Willpower would cover most of Charisma, plus the willpower aspect of Wisdom.
Taking that one step further, I would also require that all melee attacks use Strength and all spell save DCs be based on Mind, to further guarantee that everyone always knows which stat is required for which task, but that might be too radical for today's audience.