>>718145851 (OP)
It might have worked if it was marketed better and went really hardcore into the technicalities of being a cop or an organized criminal. However, it would've still had to be fun and casual enough.
Honestly I don't remember much about the game and I won't google it, but my impression was that it was more like a stripped down Battlefield game.
It would have had to be set in a somewhat crazy near future dystopia and the factions would've had to be developed well and marketed extensively to get people excited about the thought of playing as them. Bad criminal gangs (bikers, hood gangsters and whatnot) who deal drugs and run guns, but are also somewhat sympathetic due to being nice to their own neighborhoods. Ruthless police departments that do good and bad things to keep the city safe. I don't know if Hardline had any semblance of these things, but it might have made it better.
The game should've had the classic meme 80's movie guns like SPAS-12s, Valmet sporting rifles, Armsel Strikers, Desert Eagles, old but solid military surplus guns dumped on police departments etc. The mainline Battlefield games focus on top of the line tacticool stuff, but Hardline should've focused on the more underground small arms you'd see on Forgotten Weapons.