An easy to learn style it's better for our purposes than an strong one.
We don't care if grey rat practicioners are mooks that die by the thousand. We care that there are thousands of practicioners, because that means that we already fullfilled our mission.
You're not wrong. But in my head I see the barbarians fighting civilization going poorly if they have the
reliable mook style.
The pressure of civilization fighting back making the barbarians notice that those who practice
efficiency don't end up unalived. Admittedly the same could be said about
variety.
There is logic in getting as many fists and feet on the ground as soon as possible but if that flops too hard then the people on civilization's side will have no reason to save the style because it's too mediocre.
It obviously didn't work for the barbarians no matter how many people they put onto the field.
Though there's a chance of
Wow they had so many friggin fighters I thought it'd never end, I'm impressed.
Which would be good.
I see
efficiency as the middle ground between
reliable and
godlike Grey Rat style. Perhaps enough oomph to allow the barbarians to prevail but even if they don't, civilization will keep the style around because of how well it worked for as long as it did.
Meanwhile if the sect's desperate secret weapon is something easy to practice... I don't have a lot of confidence on the sect surviving.
I could see the potential protagonist elevating the style if it's easy to learn as I can see a sort of logic where it's so
easy it loops around to
efficiency. But in that case why not go for straight for something that by the sounds of it was made to kill with
efficiency instead of
easy=efficient.
The Master guy uses something easy to teach to find good seeds, but in that case the guy doesn't have high standards... Which could work?
Might be the start of a sect now that I think about it. Though if he's choosing disciples while already in a clan/sect it'd make me scratch my head as to why he'd use old
reliable.
Unless he already has something that builds off of Grey Rat and is checking for affinity with the style.
Edit: For the record, yes a lot of speculation and assumptions.