I have Overwatch pre-ordered. Only Doom i've played is Doom 3 when i was a teenager and thought it was okay. Don't have much positive or negative to say about it.
Was waiting for them to announce the business model for Overwatch before i placed my order. I mean they are pushing this esports stuff really heavily. Don't think the game is as fun to watch as it is to play (got into beta for one weekend only). It is quite fast paced and it is hard to make out where the action is compared to big, popular twitch games like Dota 2, League of Legends, Hearthstone, Counterstrike. All four of those are consistently in top 5.
For esports thing, f2p model would have been better but i think if you like the game, overtime you end up spending more. In Heroes of the Storm, i've spent 50-60 bucks as of now and lack a lot of the heroes. With Overwatch, you pay the $40 or $60 and all the future maps and characters are free. So, i like it better as someone who is not esporty.