Well a big reason it leaves a handy excuse for why I can’t answer every single ask/wish given. In addition, Genie Twilight not being able to say no to wishes is good because there will be some, both wishes in-universe and otherwise that would lead to disaster. (Like for example think of the wish that an Anon did that Twilight responded with “Seriously. What part of refusable wishes did you not understand”)

Also it’d be too sad to have a Genie Twilight that had no control over what she does grant. I wanted to make Genie Twilight’s universe’s Genies less of a slave. So that it’s more believable that Twilight can remain happy and normal as ever despite some of the drawbacks being a genie may have even if the ability to refuse wishes gets rid of a huge one that Genies are limited to.

Besides, it hasn’t stopped all the wacky fun. I love getting asks for Twilight to shapeshift/transform into something. A book and a bunny one led to funny and/or awkward situations for Genie Twi to go through.