Depends on number of positions available vs number of interviewees i suppose. Supply vs Demand is a big factor.
Too much supply (interviewees), not enough demand (vacancies), chances are harder.
Too little supply, too much demand, chances are easier.
Even though Avanti have to recruit desperately, its likely they are waiting to see how much 'supply' they have, before making any sudden moves.
From what I know (and I stand to be corrected), the final Stage 2 batch is 20th January.
In regards to leniency you mentioned, that cant be guessed as thats discretionary and that could apply to whatever the company need at the time, and not just specific to addressing staff shortages (I.e more females, more BAME, more apprentices, more older, more younger, more LGBTQ etc can also be considered with leniency or preference)