One thing Houston may be looking for is to clear enough cap space to pursue Melo. If that is the case, they will not want a 2014 1st round pick in return, as that will carry a cap hold. If their goal is to get Melo, a trade exception and future pick would be the best offer they could ask for, as getting a 2014 pick and/or ANY player (no matter how talented) would hinder their chances of adding another star.
If they are not interested in Melo, then a 2014 pick and players would be great for them. If they do want Melo, the Celtics are their ideal trade partner, and we wouldn't have to part with #17 to get a deal done.