I think that would undercut the whole point go retreat, survive, win that is STSF.
I mean here Mhaerdhess has to flee out two or three times before he starts to get an upper hand.
Restarting STSF would drastically alter the trajectory of this fight. Instead of being a 'can I survive until I get the upper hand'
This fight would be a 'Time for me to not try to defend unless I want to die.'
One thing people forget is that STSF builds typically don't have burst damage. They have to play cat and mouse and take risks before STSF is able to win the day. I've played and played against numerous STSF users, and far and away there are more than a few solid counters for it. Burst damage earlier than you usually would absolutely wrecks them. I had a rule with Hralpelk fighting them. Bash;bash;flurry. And that worked out way better than you'd think, even if intuitively you think you're flurrying too early. Sooner or later an STSF user is going to stick around longer than he should to try and milk the charges waiting for that 'fight swinging' charge count. However, no STSF user has anything even resembling decent hp.
And far and away burst damage warriors kill my STSF warriors more than anything else. Two iron swords on a fire giant warrior can flurry a perfect health elf down. Literally, straight down. Or a big iron polearm and the STSF user can't survive more than charge and one chop. Maybe two if he has Soul. Then he has to factor in parting blow.
There's no shortage of counters to STSF warriors. But two nexans with lower int trying to lag is going to lose every time. Fight smarter, don't try to nerf something you can't counter.