I haven't stumbled I to any like that. If anything, on occasion Lala tanks are hard to spot on the battlefield if they are surrounded by mob pack, but that only makes placing heal bubbles a bit more challenging. One point about lala tanking though. We had FC tank do a bit race hopping, and his opinion was that the low camera angle on lala makes it extremely harder than on some taller race. So more power to you if you master the lala tanking ^^