While these changes do up the power level a little bit, they aren't really a big enough improvement to merit going out and buying Chandra, Torch of Defiance or anything like that
Many noncreature spells only cost one mana, allowing you to cast multiple in a turn for huge amounts of damage by chaining noncreature spells together once you have a battlefield of mages
Not only have equipment cards been consistently on the rise, but Birds are still on the up and up, too
It is hard to know how important it is to keep your land count up compared to the spell you are considering countering
Kaalia is actually the 14th most popular commander
Many notoriously expensive MTG cards have experienced this, from Tarmogoyf to the ten shocklands, but their prices usually go down with reprints