Don't want to start a huge debate but since you asked some of my thoughts
The season was more exciting than we're used to, but so had the two previous seasons after Schumacher's departure. Good for the sport that the pack was more evenly matched than before and there were new winners in drivers&teams.
Jenson is nice guy but not sure whether he is in the same league as Hamilton/Teflonso/Kimi/Massa/Vettel. I guess we'll see next season. He had superior car until Summer, then his performance dropped when the traditional teams caught Brawn, while exact opposite happened with the other driver of the team. On the other hand Schumacher won quite a few WDCs with superior car (and with same tactical genius as Jenson did, and hey, also with the same #2 driver). Brawn was impressive, the car being developed with Honda money year before Honda pulled out and then the team fitting a Mercedes engine and still being so much faster than others when the season started.
Best part for me was Kimi's run from Hungaroring onwards, the win at Spa against much faster Force India car with less gas-hungry engine etc. 3 really agressive starts with KERS in a row. Made me wonder why did it happen only after Massa was hospitalized, like Ferrari can only handle one racing car at time.. Ferrari made real asses out of themselves with the strategy mistakes, Massa's replacements were really embarassing. Didn't like how Schumacher bailed out of his return. How Ferrari expected to have FIA in their pocket and rule out the double diffuser cars etc.
Lots of controversy also with Teflonso, for sure he knew about fixing the '08 Singapore GP or might even been behind the crashgate. Unbelievable that he has been to quite a few FIA hearings (spygate, crashgate..) plus the ban before Valencia GP and been able to walk away. Got to admit that his manager Flavio has pretty good nerves, at the height of crashgate when nobody knew what sanctions FIA might pull against Renault nor whether Renault would even stay in the sport, he did the one sensible move and moved Alonso to Ferrari (with Santander money).
Among the politics didn't like how the "liargate" was handled and Ron Dennis having to quit, and also the other senior McLaren guy retired in order to protect Lewis.
Max Mosley and Bernie providing lots of headlines (like lates quotes about Imola '94 last weekend), it's unbelievable how much power can two ex-team principals have over a global sport.