Wow! 4 in total would look amazing on the table. I feel some poor soul is going to be walking into a meat grinder and not even know it!
I just started collecting LoA and I decided to go all in! For as limited as the model choices are in the entire army (at least compared to other GW armies) it seems to be able to play many ways. I love that! I actually sold off my DoK army because though cool and competitive, they really can only be played one (maybe 2 ways) and many of the builds dare quite similar. Not to mention, the idea that many players have never even seen a LoA army on the table was very alluring. I wanted to purchase enough models to have several different builds, I think I purchased about 3000 points worth in total which should give me some great options.
I really hope FW has no plans to retire the army, it seems more people have been mentioning it in the AOS world lately. I would love for them to add a couple new units! I truly think it is the most unique army in all of Warhammer and I have seen many others with the same opinion - I even like that is somewhat of an underutilized and neglected army since the turnover of units is much less, but obviously a few drawbacks come with it. I just wish I could get a little more fluff on the Chaos Dwarves, and LoA specifically without dropping $250 for the Tamurkhan Throne of Chaos Book.