As one who participated in a active thread to get the Option tab added, I'd suggest you read some of what happened there...because...it was
WORSE for an interim period...it was first buried in Config, then moved to an obscure usage on Find tab (that would have confused a new user for sure!), so this is actually a very good compromise! The space was needed so that the Info panel could be moved to the right to allow another new feature in the lower left quadrant, as I understand it.
I find that it takes just about one more click than before, so that's not nearly as bad as it had been....granted, it's not as easy as before but sometimes you have to lose a tiny bit to gain some more features!
And I found that I was only changing it about every 2nd-3rd search so having it there isn't as bad as I had first thought...it's almost easier than on the side as original, as I can slide thru Options tab on my way to the right to do find or set toggles...
See comments in 4.50.62 about where it first ended up.
Also see
http://www.xyplorer.com/forum/viewtopic.php?t=645