1.if there is 1 turn, and normal 2 turns per year, there will be 15 turns to raise standard 14 normal numbered legions (and 1 first cohort), and 2 for separate cavalry auxilia (that attach to that legion), make effectively you need 8 year minimal to train a stack of legion...
2.I'm glad if there will be less money in this submod

, I hate 1 turn campaigns because when you allready got a little big in territories, you'll be challanged to FOUND CREATIVE WAYS TO THROWN OUT YOUR DAMN MILLIONS OF MONEY

, even after set tax low, and bought expensive thingies (in the other hands, since in 1 turn you can raise the most expensive units without taking heavy economic downturns, in mid to late game, there will be no challange against AI that recruit normal to weak units...
3.especially those stupid gaul who bravely besiege my frontier city with less than half legion garrison... with fullstack of levy clubmen

- and predictably got slaughtered to the last men and my legions got more experience beating clubmen). In normal 0 turn campaigns, you can simply fill every city with fullstack recruitments quickly and left the money in "more manageable" fashion.
4. RS II just proven that 0 turn recruitments can be challenging and fun... and actually 0 turn recruitments deter blitzing in long terms,