I think much like Hip-Hop, Country is a genre that looks down upon "going pop". I would be concerned that they would shun Cassadee if she released a song that had Max Martin's name attached as her second single. I mean her career has just started in country...so I wouldn't be surprised if it wasn't a single at all for that reason alone. Although it would be interesting to see what would happen if it were released.
Her music is really pop influenced so I don't think the country will claim her anyway so I think she should release ETL and see if she could get some crossover success
Nice album, much more pop-rock than country (which might be bad for country charts), but sounds really good. The song where Max and Shellback collaborated sounds surprisingly good and not really generic as their works usually are