I think DA's generally good when it comes to female characters. There's room for change, but if they're going to change the way female characters are in the game it's only fair they do the same for males.
In terms of sexualisation, you get your bikini clad sex obsessed women like Morrigan and Isabela, but that's balanced out by characters like Leliana, Aveline and Merrill, and the male characters get sexualised quite a bit as well, only in different ways. In most forms of media sexualising a woman tends to focus on her body while sexualising a man tends to focus more on their personality, and in Dragon Age that's led to characters like Alistair, Zevran and Fenris. Then of course there's Varric, who's sexy in both personality and body, but for some crazy reason BioWare decided to not make romanceable. Going by that, the work female characters need is to make them less attractive physically while the work male characters need is to make them less attractive personality wise. That is of course is if your goal is too make the companions less sexually attractive and more realistic. If on the other hand you want to make the characters more sexually attractive, they'd have to give the female characters more sexually attractive personalities and make the male characters more sexually attractive physically, which, based on the likes of Morrigan and Isabela, as well as many, many females in video games, would translate into a shirtless dude wearing assless chaps.