I used to play this game a lot more than I would like to admit about 10 years ago, and it's sad to see it now. I think you are right about the hostility though. When the mobile app launched I thought to myself, hey maybe I'll come and play a little, not anything like as much as I used to, but just for a bit of fun / time burner, and most likely as an SS player. I found that everytime I logged in (which wasn't all that often) I would have an inbox full of messages, and the last few ALL IN CAPS yelling at me todo stuff.
I suppose those still playing must be pretty die-hard players... but it's not a good way to swell the ranks of new players.
The usability of the mobile app is almost unbearable on my Nexus 5, especially the map... so if a new player sees this, it's going to be an immediate logout -> never come back 
I would be very happy to see an IC re-write that brings the user experience into the 21st century. Other apps/games simply dont require such a lot of clicks to get things done, and those that do (all those really annoying tap for cash type games) make the navigation incredibly simple in order to lead you in the right direction.
I think the only salvation for IC would be to launch a project with the objectives:
#1 redesign the user interactions (drastically) to make the game easier to play. This should include the removal of lots of features, IC looks like a dump to a new player.
#2 build a mobile-first web based UI
#3 release the web UI into the ios and android app stores.
Then maybe some measures to make things a bit less competitive...
#1 Remove drafting
#2 Stop players from being booted out of families (i.e. it can only be done automatically by the system after N days of no logins)
#3 One galaxy for all - stop kidding ourselves that there's any point in having more than 1 at this stage.
Now that I've finished typing this, I almost wish I hadn't. Stefan was foolish not to invest in this game more when it was at it's prime. I'll check back to see if it's still here this time next year.