I wasn't really into competitive battling at that time but of the little i've played I agree. It's just that I felt at that time the tiers were balanced with the pokemon they had.
Not really. Weather was permanent in BW so yeah... almost every team you met was either a rain or sand team. I feel it was DP And HGSS were the most balanced.
Aegislash is a gamble moni n my opinion. i moved into doubles cause singles is really broken now. It's mega mance and khangha with elemental punches now :/
My favourite would be lopunny and altaria. I mean we seriously needed something good to counter aegislash :? and altaria was like literally forgotten. It's a pity that mega mance got banned by smogon in singles :(