As for types, there's one that I think needs attention alongside Steel/Dragon: WATER. Water definitely deserves a spot along Dragon/Steel as an overpowering type. Like Dragon it is really powerful both offensively and defensively due to neutrality.
offensively: Neutral to all types except dragon, grass and water (so all of them are weak to ice, except water which makes the water circle-jerk even more prevalent). What more could you ask for in a primary STAB, with ice as one of the best secondary attacking types in the game?
defensively: Only weak to 2 types (grass = crap, electric = only average at best, both are very "meh" as a main stab)
Compare that to dragon which is weak to ice (one of the best and most prevalent offensive types hands down) and resisted by steel (one of the best and most prevalent defensive types hands down), and you realize water as a type is arguably even better/more dominating than dragon.
The only real difference is that Dragons have Draco Meteor and Outrage along with better offensive base stats overall, but that doesn't change the fact that defensive water types are a bitch to take down and STAB water is not easy to defend against. Hell, water is such a nice attacking type that some pokemon use it as a secondary despite its lack of super effective hits and pokemon like Gyarados and Suicune can run sets that don't even have a secondary attack (crocune, res-talk gyara).
I don't think alterations to water should be made, but I would like to see some much better grass and electric pokemon that learn good secondary moves (grass types that learn fire attacks, electric types that learn Ice Beam/Good Ice Physical). Another dragon type oriented towards beating water (isn't 4x weak to ice) would be nice.
At the same time though, I would also like to see some more offensively-oriented water types. Water has such awesome potential as a dominating offensive type (lol, Kyogre), but even the most offensive OU water types, Gyara and Starmie, have to take a somewhat defensive-role because of a lack of base power (gyara's water fall) or a meh offenive base stats (imagine if Starmie's hydro pump was backed by 130 base special attack). Some frail sweeper-types and water attacks with higher base power would be nice to see (though again, balanced by the release of some really great grass/electric types).
And by great I mean GREAT. Grass is such a crappy type both offensively and defensively, the pokemon's got to be ridiculously good to make OU, and then even celebi, arguably the best of the bunch with 600 BST, is only "average."
offensively: Neutral to all types except dragon, grass and water (so all of them are weak to ice, except water which makes the water circle-jerk even more prevalent). What more could you ask for in a primary STAB, with ice as one of the best secondary attacking types in the game?
defensively: Only weak to 2 types (grass = crap, electric = only average at best, both are very "meh" as a main stab)
Compare that to dragon which is weak to ice (one of the best and most prevalent offensive types hands down) and resisted by steel (one of the best and most prevalent defensive types hands down), and you realize water as a type is arguably even better/more dominating than dragon.
The only real difference is that Dragons have Draco Meteor and Outrage along with better offensive base stats overall, but that doesn't change the fact that defensive water types are a bitch to take down and STAB water is not easy to defend against. Hell, water is such a nice attacking type that some pokemon use it as a secondary despite its lack of super effective hits and pokemon like Gyarados and Suicune can run sets that don't even have a secondary attack (crocune, res-talk gyara).
I don't think alterations to water should be made, but I would like to see some much better grass and electric pokemon that learn good secondary moves (grass types that learn fire attacks, electric types that learn Ice Beam/Good Ice Physical). Another dragon type oriented towards beating water (isn't 4x weak to ice) would be nice.
At the same time though, I would also like to see some more offensively-oriented water types. Water has such awesome potential as a dominating offensive type (lol, Kyogre), but even the most offensive OU water types, Gyara and Starmie, have to take a somewhat defensive-role because of a lack of base power (gyara's water fall) or a meh offenive base stats (imagine if Starmie's hydro pump was backed by 130 base special attack). Some frail sweeper-types and water attacks with higher base power would be nice to see (though again, balanced by the release of some really great grass/electric types).
And by great I mean GREAT. Grass is such a crappy type both offensively and defensively, the pokemon's got to be ridiculously good to make OU, and then even celebi, arguably the best of the bunch with 600 BST, is only "average."