It's understandable that they're skipping skin lines, why is it scary? Too much a good thing makes you tire of the good thing, so if we keep getting SG skins, we'll be overwhelmed with them, and the hype dies for them.
If they skip lines, the next time they show up, they're more impactful and we get more stoked about them, and it also allows for them to get into a release pattern for skin lines. So one year it could be Blood Moon, PROJECT, and Star Guardian, and the next year it could be Omega Squad, Pulsefire, and Odyssey. I'm not opposed to this at all - plus, Riot has even shown us that they'll release onesies of skin lines they're clearly skipping, such as the Dark Star Jarvan and Blood Moon Evelynn, so there is a chance we could get A Star Guardian this year, just not an entire event and team lineup.