These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The Scrappy: Street Fighter X Tekken, due to a host of problems that made it an annoyance to play in 2012. Capcom attempted to remedy this with a patch in 2013, but the damage seems to have already been done.