cronin did just fine - losing POC, ross, Healy, BOD or even Ferris, Bowe , Kearney, o'gara would be far more serious - hopefully best will be back for later stages - injuries will be par for course of this journey for all teams - its hardly like losing dan carter
POC -> Cullen isn't near as big a gap as Best -> Cronin
Bowe -> Trimble again
Kearney - > Murphy is a big step, but again not in the same league.
ROG -> Sexton is not even a step, as it's a crazily close decision already.
You're completely underestimating just how good Best has been and how important he is for our game.