Agreed. I think GW have probably learnt their lesson from squatting, well, squats. Even if you don't think the army is popular, and you don't know what to do with it, removing it from the game is going to cause you a huge headache for years to come. People born after squats were squatted were taking about them.
What I could see happen is a huge change if direction for BoC, with their old stuff being moved permanently to TOW. But even then I think they need to leave some avenue open for posters to keep using their old models in AoS, or risk backlash. See how High Elf, Wood Elf and Empire units were treated when new CoS were released: there was an article telling you how you could carry on using them as proxies (that sort of thing matters because if you're not playing on a friendly gaming group there's always a chance some dickhead will try to refuse proxies, and having GW endorse then makes that very hard).
So I think whatever direction GW goes with with BoC, they will need to include at least one man sized infantry that you can proxy Gors, Ungors and Bestigors as.