Third, Punkz:
Based on above image, there is no minimum withdrawal for btc in Punkz now and there is also no withdrawal fee (free) now.
I checked this again with their live support and they confirmed that the minimum withdrawal amount is still €10.
Means that the information on the withdrawal page is misleading for player as it is written as "Withdrawal Amount (Min $0.00)"
I tried myself earlier today to request a withdrawal less than €10, the system is not rejecting it straight away which make the withdrawal request on pending status.
Few minutes later, my withdrawal request is rejected/declined without any reason but it must be related to the minimum withdrawal rule.
Anyway, found some other sites that need to be updated as what is written here is different with the one in the website:
1.
Bitsler minimum withdrawal is now 0.0002btc

2.
Wolfbet minimum withdrawal 0.0008btc

One casino that you may add on your list is 2UP.io, their ANN thread started on October last year.
The minimum btc withdrawal is 0.0003btc but unfortunately I cant really remember about the fee as I'm VIP user there who gets free network fee.
Note: I know you are aware there is an open scam accusation thread against this casino, so take your time to take a look more before adding it.