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I suppose the ultimate point of this thread is that, while I'd love a hardware revision of the steam controller, what I'd love even more is a more focused software push. Normally I'd hit one of those issues that prevents me from using the controller how I'd hoped, and end up reaching for the trusty Xbox/PS4 controller. I honestly love the hardware for certain types of games, but I can't remember the last time I thought "wow the steam controller would work well for this" and it actually worked out well. These issues culminated in the steam controller being a good option for an absolutely minuscule amount of games in my library (and I own like 800 of em), which is a damning situation to be in when your controller also requires you to really practice with it to become proficient. To be honest here, that "mouse-like joystick" was at best serviceable, and at worst unusable with the way thumbstick acceleration worked in a game, and outright using that touchpad as a thumbstick replacement was clunky and bad. This often left you with picking between good aim (mouse + keyboard) or good movement/button mapping (controller). Some games would hitch when the input swapped, some games would flat out not allow them to work together, and other games would rapidly swap the input prompts (honestly this was the best case because it's at least usable in an optimal fashion).
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What really killed the steam controller for me was the vast majority of games not working well with simultaneous use of a keyboard + mouse and a controller. But prompts aren't the big thing that held it back, because you can adapt to not having accurate prompts.
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I don't know what Valve did to make supporting the controller itself easy, but I can't recall a single game that even had prompts for it (I'm guessing some Valve titles would have, but other than that there was nothing I played with them). By far the biggest thing working against the steam controller was the lack of proper in-game support from developers. Kind of a random topic but this is an idea that bounces around my head every time I want to dig out the steam controller and play something with it.
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