Although nukes easier to get than SC1, SC1 nukes are far far more effective. It used to take 2 nukes to kill a command center / hatchery / nexus. TvP specifically you could do 1 nuke and an EMP if I recall and take out a Nexus.
Am I asking Blizzard to make Nukes this powerful again? No. What I am asking for is that it take LESS THAN 5 NUKES to kill a Nexus or Lair / Hive ( They will take 5 because of shield / health regen, but 4 if its at the same exact time ). I'm thinking of 3 nukes doing the job would be a reasonable number. It's not like 3 nukes is extremely realistic in the first place, but at least POSSIBLE.
If a Blizzard employee reads this: Please explain your intentions for the Nuke if it's not to take primary buildings( like it was in SC1 ). I understand it can be used occasionally in TvT to force tanks to unsiege but beyond that it's a pretty big gimmick.