There are two things that seem to be necessary for an image host to be successful on Reddit: 1) be extremely fast (why people hate i.minus compared to imgur), and 2) don't provide any content that can have sound.
I don't know what your service speed is like, but you break that second rule which seems really important to Reddit. Redditors don't actually seem to want "more featureful" in a n image host. Gfycat has an unquestionably clear sole purpose: to be a faster "GIF" host (by providing an HTML5 video option).
It remembers your preferred volume, though that feature isn't very discoverable. You could set it to zero and all videos would start muted. Ideas on making that more discoverable?
Perhaps have a separate url for "proper" video? Or an option to turn off the mute by default (as opposed to having it turn off automatically the first time you unmute a video.)
Or just require videos with sound to click to play. It's the combination of sound and autoplay that is annoying.
I don't know what your service speed is like, but you break that second rule which seems really important to Reddit. Redditors don't actually seem to want "more featureful" in a n image host. Gfycat has an unquestionably clear sole purpose: to be a faster "GIF" host (by providing an HTML5 video option).