As Nordesmic has clarified, GDXJ is not a real possibility in 2018.
That said, relisting in the ASX300 in the next few quarters probably is (assuming things continue to improve and go to plan)...
Being in the ASX300 will at least get a few more eyeballs back on the stock, but without marked improvements in reserves, operations or the gold price I don't expect it will be enough to get it back into the ASX200 or GDXJ.
Realistically speaking, you'd probably need a higher gold price, consistently delivering on 32k oz/qtr+, reinstating dividends and increasing their reserves to spark the sort of interest to get the price back to the $1.50 to $2 that it'll need to get sucked back into the major funds.
That said, I'm happy things are at least trending in the right direction again and it's nice to be well back in the black on this one (it was a long wait).
MML Price at posting:
54.0¢ Sentiment: Buy Disclosure: Held
(20min delay)