If they want to change the world that's one thing, but bubbles are a lazy attempt to explain how two armies could randomly fight eachother. It's the
a heavy venom cannon or two?
Agree with everything except stronger Lord & Hero choices.
Not every Tyranid force and/or player has 5 Flying Hive Tyrants, and again... the Tyranid Codex has to relay upon that one model spammed to carry it through.
People obsessed with winning treat 'weak' Codexes poorly, in my book 'bad' Codexes are something completely different from 'weak' Codexes. Imho, bland