Bought TF 2 and was in the beta for it, it was the game that made me join UKCS though I did play CS:S on UKCS servers before that but didnt bother with the community much
TF 2 didnt have any pay for DLC, so it lasted for a looooooong time before I got tired of it, and also tired of all the new stuff that took away much of the original fun for me personally, for most it gave even more fun with the updates but I am happy enough... got more than my moneys worth by miles.
This Overwatch seems interesting, sort of like TF 2 vanilla but if its a pay for title it will end up having DLC (Activision, remember...expansions and DLC up the wazoo), as a F2P you get all the game parts free just need to grind for stuff.
Sometimes keeping an eye on your stats is not a good thing
Some things are painfully obvious, others must be made obvious... painfully