... I must say I have never really thought about the complex rules - I had to compare and I'd say Swedish is more complex than the other Nordic languages.
Although they kept the cases - that there are only traces of left in Swedish - even Icelandic seems simpler.
Swedish is a bit more complex with arbitrary assigned neutral or uterum gender and definite articles.
But you'd probably be understood using -er in spoken Swedish for a large group of words. Written Swedish is more tricky.
https://medium.com/@mailmyswedish/plurals-in-swedish-76f1de9...