note:I do not own a Surdaruska and I assume Surdaruska is the same as Triglav in terms of the range and movement during the charge attack.
Currently...
It feels like I'm using somewhat of a mid-long range charge attack. I find myself aiming at enemies almost off the edge of the screen to the left and right. When you use Triglav charge, you move farther than a Troika, but you don't have increased charge-smash radius (feels kind of flat as far as 5* charge attacks go). You have to have pretty good aim to safely use the charge attack up close.
I propose this change...
The 5* would have the same movement distance as of a Troika and increase the smash attack radius such that the Triglav/Surdaruska will have the same range as before.
I dunno, I feel that this change would give the 5* Troikas more oomph and awesomeness.
I find the Sudaruska charge attack brilliant as it is but the huge stepping feels a bit risky at times. Protip: place an EV and charge your sword without moving from where you placed the bomb. If you're surrounded enough, you'll execute the charge where you stand. Maybe not such a good idea with Triglav, though.