True, i agree, a choice is always the best!
The good news is, you can choose! On my QNAP i can activate or deactive the "Nosearch" option in the TwonkyVision server via a weblink. After i change the setting, the menu on the Roku automaticcly changes to your preferred view or with the search option and browse server containers.
On my QNAP i can do this with the following link, maybe this also works at your Twonky server: http://ip.of.nas:9000/rpc/set_option?nosearch=0
And then choose nosearch=1, then you get the menu you like.
I believe it is also possible to change this option in a .ini file, but i don't know which one that is.
I hope this helps you!