They don't seem particularly imbalanced. I'm not sure what the particular arguments for removal are, but I can guess its that they allow you to do things that you would normally have to research Arty or Med chassis for. So my case for them: They can be added as a sub-tech under U-chassis. Hell, even make them more expensive than mediums, and generally unviable. I just know there's a couple situations where they can be useful (not just as a tech rush - i.e. the LT can get through places the med can't at speeds it can't, and maybe someone likes the 2 slot cannon with 4 slot passengers on the AFV and would like to pay res for that...) Moreover, I like being able to invest more res into a better rush while still using the smaller chassis. Also, I am a fan of the LT, and like being able to put guided, salvo etc on it. P.S. The new developer additions are an insult to Glorious Jekotia and her Prime Legion! However this post is more serious than those postings. Its after 12 here.