Nah, Starcraft 1 just ended up pushing balancing to the tournaments and map designers. If you tried playing it on the last Blizzard maps from the original run of Brood War, it's a questionably balanced game.
True, but then BW's map pool rotation is also way slower / more conservative than SC2's. We're used to 7 new 1v1 maps every other season by now (personally I preferred the old system where the 2-3 oldest and/or most problematic maps would get phased out every season).
You are correct. Map design has a dramatic impact on the balance of BW - and as the game develops, and certain matchups become more or less one-sided, tournaments adjust their map pools.
Meanwhile: Fighting Spirit