The game is actually very active right now compared to what it was a few months ago. I really only go on SoL and FOD servers, and both usually have people for most hours of the day and often have over 15 people on.
I thought you'd been popping into the server sometimes? There's been someone called 'aju' that has turned up occasionally, we all thought it was you!
But yes it's definitely worth getting again. There is roughly around 100 people still playing the game regularly split between sol, fod, jip, jj and ats over the timezones. So yes there are many active people especially during EU hours!