After reading the thread, this is my opinion on it.
First off, the OP was almost absurdly rude. I've been in relationships where I was fully intimate in less than a month, and I was also in relationships where we both held off on sex. I'm fine with the option, but let people do what they are going to do. If they enjoy having sex in their relationship early on, it doesn't hurt anyone so long as everyone is being careful. If they choose to wait, or are like the example of the Christian couple article, then that doesn't affect me either. There is a similar thread in the DA forums, but the OP was very polite. Please, don't shame people just because they like sex. No need and frankly puts a lot of folks on the defensive.

Anyway, I've posted in character/story request threads often over the last few years, (though these days I more lurk) and this has been one of the ideas that I've been fully behind for quite some time. I think it's a fair request, and as long as it doesn't kill the word budget, I think it's a great idea. I'm usually happy with reasonable ideas such as having a sex free and/or asexual romance in a BioWare game. If anything, I've always felt that the friendship and the platonic side of a romance is just as important as the sex. To quote an author I love: Being best friends is the only way to be lovers, staying best friends is the only way to be married. I've been married for 10 years as of June, with the same person for over 12. Over the years, I've found it's a very true statement.
I also think that it can lend to some further fleshing out of a character without going too far past what the writers can reasonably do. Depending upon the background that the PC has (which will likely be chosen by the player ala ME and DA,) the player might feel it's within their character to enjoy romance, but not be into having sex. Folks choose to wait to have sex for all sorts of reasons. Sometimes it's religious, sometimes it's asexuality. However, sometimes it's because of a bad previous relationship or (in the case with two of the potential Shepard backrounds,) a tramatic past. Those are ideas that I think that can add to roleplay as well as replay value.
I don't want to see sex and relationships disappear from the current BIoWare franchises. Still, I don't see the harm in having a "cuddle/'can we wait" option.
Edit: Wasn't there a "just cuddle" option with Garrus? I'm not honestly 100% sure.