ABX has, in round figures, about 230 active pilots. I'm one of them (hold the applause).
There are 470 pilots on the seniority list. Should you be offered a place on the bottom, a good question to ask is as to where the missing bodies are buried.
Some are long term disabled, some are biding their time in other pursuits, some are happily employed elsewhere but some, if given the opportunity, would return. When these nomads come home they'll resume a mid seniority position on $120k a year, 4 weeks vacation and benefits.
The package for those currently on the list is far from that offered in the good old days before the Germans arrived (not the first time that's been said in the last 100 yrs) but better than much of what's available elsewhere and certainly better than nothing. So, quite a few will be jumping back aboard once their secondary choice sinks - and some secondaries are indeed going underwater.
ABX has unquestionably demonstrated that at best it regards its employees as commodities, at worst pieces of collateral to be used for leverage.
A New Hire's progression up the seniority list will be far from linear because absent bodies preclude a smooth ascension up the greasy pole.
If you're unemployed, have nothing to lose or stand to gain something from B767 training then by all means take the offer. Be aware however that once on the line you'll be fresh (probationary) meat to be ridden hard and put away wet and you can expect an interminable time living locally in CVG on reserve. You'll also be prime furlough fodder.
To reiterate: if you have nothing, this is worth a shake of the dice - but it's far from a stable career position that's being offered. Eyes wide open.