It all rather depends on what you think you want from - and what you think you can ACTUALLY GET from Eastern.
It used to be that people spent a year or two at Eastern to build experience, as that was the only way to secure a jet job with a better operator. Those days may well have passed and you must bear in mind that there have been many, many pilots stuck at Eastern, desperate to move on, but unable to.
Eastern has a culture built on a scant regard for pilots, viewing them as expensive whingers and the company has been built on the assumption that those 'whingers' will move on, so they don't have to be treated with anything other than scorn. Even though the market conditions have trapped many pilots at Eastern for several years, the company has simply failed (at very senior level, anyway) to change its view or attitude at all. The poor pay and conditions, the terrible rostering and endemic indifference of very senior management remain. Please don't expect them to change.
There seems to be a lot of turmoil at the moment, with people leaving, rumours of the J41 fleet having been bought (rather than being leased - if so, why?) and Loganair seeming to be on the point of buying some Saab 2000s.
I too, would be very wary- but there are few safe options in aviation - just varying degrees of risk.
You must simply decide whether or not the benefits of being at Eastern outweigh the benefits of other courses of action. You must also decide that, were you to get stuck at Eastern as so many have been, could you survive on the pay and conditions and could you tolerate the company's attitude to its staff? If you can get out of it what YOU want - go for it, if not - STAY AWAY.
As Dirty Harry said: "Are you feeling lucky, punk?"