Having solid uncommons and commons helps even things out a bit, but even if you open way above average in terms of lower-rarity cards, it won't really make up for missing out on good mythics or foils because the good lower-rarity cards just aren't as valuable as the mythics and foils
This is based on Final Fantasy 14 's Dark Inside trial, which was added in patch 6.0
Crobat ex Unlike Espeon ex, there was no doubt that Crobat ex could potentially become a menace when faced against
So, as WoTC states, you will always get a rare or mythic rare in a regular booster pack, but if you find yourself in a mass market store and only have a couple of bucks to spend on scratching your Magic itch, you now have this as an option.
It's almost surprising that Vaporeon isn't higher among the Eeveelution SIRs, since Vaporeon is notorious for being the fan-favorite of the original three
It is certainly a more common one to see as Lili is cheap and often played