If Walsh is out for a game or two, which is almost a certainty, Cobbo to fullback, Mariner/Leota to wing would be pretty reasonable. Hopefully Cobbo and Walsh will earn Origin spots this year, so we'll need to be able to cover fullback and wing for at least those games.
I would prefer if we can keep Cobbo in one spot for the year... poor bloke has had to move and learn new positions every season, because he's the versatile guy across our backline.
He's played every position of the back 5 at this point... including some games at right centre (epic shutdown of Bradman Best in his first season).
I also don't think Cobbo brings the same type of game that Walsh brings so it would require an entirely new gameplan for the team.
That might be OK now that we've got Bhunt and Reynolds in the team, but it would still be nice to minimise the moving parts across the team to plug holes.
Not saying Seigwalt as a qcup player can come in and be Walsh, but his type of game looks closer to Walsh than Cobbo's.
I might be tempted to see Arthars become our backup fullback this year as well.
His game is also different to Walsh's, but he's more experienced, so might be able to adapt better at moving if needed to move around... we also know that he will be here over origin... whereas Cobbo might be playing
If the fullback gameplan when Walsh is out, is to simply finish off 3v2's on the back of sweep plays, then he might be able to do it with Bhunt and Reynolds setting him up.
Whereas Cobbo's decision making and ball playing on those sweeps seems much lower.
Jesse could be a Edwards lite ball player... Edwards isn't usually asked to do too much... just sit on the right and finish it off when they come to you. He's been doing some off the cuff stuff last year, but is usually pretty basic out there.
Will Kennedy and other guys playing fullback aren't required to do too much across the league... just mostly be safe at the back, organise defence, defuse kicks and then finish off 3v2's.
Those defensive aspects and finishing off shape might be more important to Madge and Barrett when having to play without Reece this year... so whoever can do that the best might be the one elevated to Walsh's deputy