Agree with MS,

I see Dolphin as a bare CMS

1.No social connectivity in the core...
say, http://tomakali.net/m/videos/share/Amudha-Tamil-Horror-Short-Film
No FB, No FB likes, No tweets... not even a simple inviter

2.Template pack
There is no choice for the members to choose default templates for their profiles

3.Sharing
say, i have two websites
how do i promote my site1 content on site2
API? missing

4.Banner system
Very basic

5.Mobile site?
Missing/ignored

6.3rd party see more modules
There are tonnes of innovative products which suites few websites.
but theres no window to listen to what the majority of webmasters want

7.Mass Mail
Cant send to particular gender, membership level, city, No queue monitoring :(

basically im out of "fun ideas" when im worried overtime about the corefeatures itself :(

Hope some miracles happen in trident/D8