Revelations and Expectations of ME3

This is my first forum ever so bear with me guys in case i make any stupid mistakes. mass effect 1 & 2 are two of the best games ive ever played so my expectations for mass effect 3 are sky high (Just watched the VGA trailer).  mostly when it comes to the storyline since that alone allowed me to over look the drawbacks in both games.  bioware has done a great job at letting us choose events in both games but i want thess choices to have a MUCH bigger impact in mass effect 3. I mean i liked seeing my choices from me1 affect my character in me2 but it wasnt enough. i want to see my actions from the previous games have powerful consequences in me3.
since where having the final showdown with the reapers in me3 i want
  - the rachni to come assist shepard since i let the queen live
  - the geth/heretics coming from behind the veil and joining the resistance
  - the migrant fleet backing us up
  - urdnot wrex uniting the clans, and helping
  - the dawm council to finally back us.

so basically what i want is that in me1 we assembled a couple of specialist to track a rouge spectre, in me2 we assembled a powerful team to stop attacks on human colonize, but in me3 i want an army made up of all the species ive helped to stop the reapers.

also, there are a couple of things ive noticed that hint at events in me3.
   - the first is about the reapers themselves, apparently they have been trying to get back for quiet a while, since the rachni queen said that there was those that soured there song with yellow notes, that obviously here saying they were indoctrinated, which makes me think that possibly the krogan feel to incotrination for a while during the rebellions(just speculation). the heretics feel as well, and some individuals of council races such as saren

   - which brings me to my second topic, saren being an agent of soverign, the collectors apperantly agents of harbinger, i think we have already been introduced to another. in me1 saren's eyes had a certain blue glow to them especially if you look at the cover of the game. they were the result of soverign's cybernetic upgrades on saren. but that same glow is seen on the illusive man, what im thinking is that he is an agent that has been guiding or steering shepard in the path that the reapers desire, sure shepard killed the human-reaper but i mean these guys have done this for millions of years other races must have resisted before.

   -third when speaking to shepard in virmire, soverign says that organics are simple mistake. so im wondering were they come from machines that accidentally created organics? how where the machines built?

well thats all i got for now, ive beat the each game more times than im willing to admit so feel free to join the forum and discuss anything you think is relevant.