Lineland Door Clip made a sub 15 time possible for RTA Egg%, but I don't think it'll get much faster than this without another major innovation! This saves a huge amount of time since it's faster and way more consistent.

I can see mayyyybe up to 30 seconds being saved over this run with perfect gameplay, but breaking sub 14 is prooobably not possible unless your name is Tool-Assisted Speedruns~ ;p