I was already planning on getting all the characters in the movie plus any other toys that appeal to me - so the movie hasn't changed that.
So far the only thing it's changed is my decision to get Voyager Starscream. As a toy fan those tats really put me off, but seeing that it's in-canon with the movie, I decided to get it... but only on sale. Lucky for me I found it on 20% sale at Myer today and with my wife's MyerOne card I got a further 10% discount - paying only $36!
I thought the appearance of the Constructicons as "Imperial Stormtroopers" (as aptly described by dirge when I saw it with him last night) was an interesting way of justifying the purchase of both Constructicon Devastator and the individual Constructicons, but it hasn't swayed me. I'm still going to stick to my plan of only getting the individual Constructicons as "regular" TF toys and Devastator as Legends.
I liked seeing NEST in the movie, but it hasn't convinced me to buy any of the HA figures.