I wrote a rant on options back in this post:
http://www.smogon.com/forums/showpost.php?p=3755322&postcount=113
TelamonianAjax pointed out that Chrome's more popular than Opera for reasons other than how they treat the idea of options, which is true, but my point is that most things that are options really shouldn't be.
Right now, the replay viewer has three options:
Sound: On | Off
Color scheme: Light | Dark
Speed: Fast | Normal | Slow
Does it look like "Display boosts as: Multipliers | Stages" really belongs there? It feels to me like something as silly as "Light Screen color: Yellow | Red."
(P.S. if you're wondering, yes, sound support and color schemes were just added a few hours ago. Feel free to give feedback.)