As far as I understand no deposits or withdrawals from Poloniex are possible for anyone at the moment. This is indeed frustrating, and we should keep on bugging Poloniex to fix this.
Poloniex states:
" BTM is currently under maintenance or experiencing wallet/network issues. Deposits and withdrawals will remain disabled until a solution is found, which may require an update from the BTM team. Any updates must be tested and audited before enabling."
There has not been any wallet/network issues for a long time now. There was a bout of "selfish mining" by some powerful Scrypt mining syndicate where blocks were getting orphaned constantly. But, this not the case any longer and hasn't been happening for many months already, so there really is no reason for deposits and withdrawals to be disabled.
What about the data shown on
https://chainz.cryptoid.info/btm/#!overview
It states that the block generation is quite unsteady. Is this data correct? (I didn't check the blockchain)
The proposed fork has Dark Gravity Wave v3 as the difficulty adjusting algorithm. This will make the block generation very steady. It is true that with the present algo, which adjusts difficulty only every 720 blocks, the difficulty factor and network hashrate can become mismatched, resulting in either slow or fast block production.