I already gave my opinion on this in the chat we had about a week ago, this topic doesn't seem to give any new better ideas.

Verdict: I do like the idea of making boss battles more interesting since they are rather boring by default, however this idea is a lot of work to make and it doesn't make the battles that much better. The fact that the bosses don't really have stages (something like extra spiders spawning in a boss battle, the main boss makes a comment about minions attack or something like that) makes it difficult to come up with decent messages, the lack of messages that this will cause will most likely make this more annoying than good after a while. Denied