-1 there's a lot of counters to IG, and if your opponent already wasted their IG you immediately get the upper hand
if you get 3spark IG'd, either be fast enough with AD or just die and come back really simple there's no shame in dying to that (there's no shame in dying ingame in general but I don't think many people have that mindset just yet, so...)
the only reasons I'm seeing to have IG removed is cos, what, there's no point to it? if you don't use it why does it matter