So, something I've not seen anyone mention here yet. (If it's been mentioned I missed it.)
When the Away Team is preparing in the replicator room Ed comes in to check on them and before leaving points to Alara and says, in a rather stern, captainly, tone, "Alara do something about that nose."
We get a shot of Alara saying, "Yes sir..." and then insecurely glancing down at her nose ridges.
This is kind of an odd scene to toss in here given that clearly given their costume preparations Alara was working to hide her alien features so there some "meaning" to be gleamed here. It's been shown that Ed treats Alara with a good deal of respect and equality, having no problems with her "abilities" and encouraging her to use them when they're useful. (Alara, can you open this jar of pickles?) Also, pretty much Alara's been featured since the second episode there's been some mention of her having boyfriends and break-ups due to their insecurities about her abilities/strength and in the episode with the Bio-Ship she pretty much school-girl crush-gushes over Ed's treatment of her.
So I wonder if this little moment with her glancing at her nose isn't, maybe, her taking Ed's comment a little out of context. That she's not thinking, "I forgot to cover up my nose ridges, thanks for reminding me, Ed!" but more "My nose? Should I do something about it to be more attractive to him?"
I do suspect at some point we'll get some episode dealing more with this crush-like act with Alara, that she's more dumping all of these guys less because of their insecurities about her abilities (or the way they dance) and more that none of them are measuring up to the "crush" she has on Ed.