I'm not sure how the show truly feels about Daenerys going full Mad Queen yet, especially while Cersei is still alive and somewhat occupying that role. They've been building blood lust into her character the entire time, mainly through verbal reminders from her advisers that while she isn't like her father, she still has the potential to veer towards authoritarianism. Daario has remarked that she's "a conqueror, not a ruler"; when she broke up with Daario in the season six finale she said she "felt nothing, just eager to get on with it"; in the opener of this season she had the chance to sit on her throne at Dragonstone and accept her role as a ruler, but instead went straight to the Painted Table chamber and set about outlining her battle strategies. She's eager to "be a dragon", to destroy mercilessly.
But while this is the case, the audience have still been instructed to sympathise with her from the moment we met her, so it's going to be hard to watch her switch from being someone we can get behind to someone who needs to be stopped. The Targaryens are widely considered by the Westerosi public to be the main antagonists but our journey with Dany has proven they're more multi-faceted than the rulers of Westeros would have you believe. The way Daenerys' character is written is effectively going to have to make the transition from being a person we willingly sympathise with to someone we'll reluctantly want to be curtailed in order for there to be a reasonable, diplomatic approach to the future of Westerosi politics.
Daenerys is going to feck shit up beyond repair if she carries on the way she's going now, and that's not good. This probably means that one of our more reasonable characters, be it Jon, Tyrion, Varys, or even Jaime - to bookend his story by murdering two Targaryens - will have to cut her down before she goes too far. I'm predicting death for Dany before she has the chance to burn cities to nothing. It would be classic Game of Thrones to build a character up for eight seasons, only to cut them down right as they're about to grasp either the truth or their heart's desire. They've done it to Ned and Robb, they've done it to Margaery, and they'll gladly do it to Daenerys for one final heartbreak.