MaHuD nailed it, really. There are not many mods that survive long on the MP front. It's a difficult scene to crack for longevity and, whilst many boom for short periods, they almost
always inevitably decay.
Vikingr is most certainly capable of mustering large numbers of men for events. Just take a look
at the latest event, of which you are free to join and taste, rowenamosgallant. Infact, there's probably no better time to try out Vikingr. Typically, the community is compacted into several clans and freelancers, it's a closed environment where each face and name is most likely recognisable (as per traditions in the sagas dictate!). If you want
mega big every day, hit up cRPG and NW.