First I'd like blow jobs (on knees) to be available for all gender matches FF(not really as many are sick of dildos as it is :/ as am I), FS, SS, and MM.
Second, I'd like additions such as rubbing the slit of the cock with the tongue, and inside mouth grind (sorta like brushing the teeth)
Thirdly, I know this has been said many times before but Foot job poses would be a great addition to foreplay and many fetishists and newcomers who want to experience such fetishes can indulge in it. Some may like some may not, and I realize that this isn't near top priority but its still a suggestion that needs to be brought back into play once in awhile to gain more opinions and feelings.
Update:Totally forgot that MS blowjob is already available, sorry for the confusion