Yatagarsu is never coming out. I mean you have UNIEL but that's French Bread. There might be a new Melty Blood?
It's not as if air dash, burst, etc. are mutually exclusive to ArcSys and they've refined on those mechanics over the years while creating enough variation and introducing enough unique elements to make their games stand out. I mean a lot of Capcom games have similar mechanics that have been refined over the years.
Gundam games mechanically play similar for the past decade and have refined of the mechanics. Bandai Namco does that for a lot of what they do outside of Tekken.
They only really have 2-3 franchises they make and support, the rest they publish with how relatively small they are. What people come to expect from ArcSys now is not only mechanically unique/gimmick characters, but a faster paced game without just artificially making it faster. I don't see how ArcSys wants to or can invest the time and manpower to create a completely unique system that won't fit the image they've created over the past few years. when Guilty Gear and Blazblue are as popular as they are now.
If they could handle making and supporting another game, unless they know for sure that it will sell, I don't see them doing something completely unique.
Shining is popular series from SEGA but Blade Arcus from Shining SUCKED and it DIED from the start. Even the update is gonna be terrible. I don't even know how Blade Arcus got an update other than being funded by Sega and being from a popular series.