I would definitely like a rebalance of unity and traditions. I think unity should be harder for wide empires and easier for tall. It makes sense from an immersion standpoint, and balance too. I would achieve this by adding back tradition costs for planets and pops, but decreasing the cost for traditions already taken, to compensate and keep the average speed similar. If this was the case, then traditions could be made more powerful. It would act more as an equivalent to technology. In addition to this, I'd like every tree to have perhaps 2 more traditions in them. They could expand the trees' depth, both figuratively, and literally. By that I mean the traditions could be put on the vertical axis instead of making the tree wider.