1) Wall - Wall is definitely very important and I think it would be not very hard to add because mobile black theme have it.
2) Chat - Live chat is as well very important and it is in older mobile theme.
3) Whu Online - This is very important for new websites, because sometimes people are searching just to talk, so this future really helped and it is in old framework, so it is not so hard to add.
4) People search modification - Now it is allowed to search for people in countries, but why not to make options to search in world wide?
5) Audio and Video calls - This would be very important for users and for selles this software. There is lot of dating software, scripts, app source codes, but just one with live call using phones and it dont work properly, I know this is hard function but it really could boost your sales
I know that there is many same requests like mine but guys I think you need to do more stuff for mobile, because for websites I think this script is perfect, for phones not bad.