Anto
You are comparing Molotovs to Shields..... did you actually ever play 1.6?
The shields actually brought NOTHING to the game, they were only for one side, and they were incredibly silly when playing against them. They got banned for good reason.
Molotov's are completely different, and whilst they are overpowered, they would be better restricted to two per team. They add in the aspect of slowing down rushes, but also defending bombsites from CT retakes, they can be used to cut a certain area off from a team trying to push and force them to push another area, where you can have 4 people waiting to pounce.
They are also spectator friendly, from the people who I have shown games to (who don't play CS or PC Games either).
Please stop the whole Shield Vs Molotov debate, there are no similarities between them.