well, telling you right now, it will become big very fast, this essentially neuters two of the most hated characters in brawl (olimar ICs), and since ICs essentially loses their entire metagame with this, people will pick this up and spread the knowledge fast, give it a month, and i can see olimar moving down to bottom of B tier or even upper C tier.
edit: also, i've already seen olimar's grab escaped at 0% before olimar can throw before this information was known, now im curious to see how much % olimar has to rack to successfully do spaced grabs. Some other characters like DDD and falco might also get a little nerfed because smart players will buffer the inputs and be able to get out of CGs (at least, in theory)