The 10 coin cap is temporary, eventually you will be able to darksend larger amounts. Currently you can just send the 1000 coins without darksend enabled, I think this will always be an option if someone doesn't want to use darksend they don't have to.
I meant something else. Let me refine my question-
Sender A sends 4 darkcoins to receiver B.
According to the scheme you and Evan disscussed, receiver B gets 4x1DRK, each residing in a separate 'change address'.
After many similar transactions, B holds for the stake of argument 1,000 drk in his wallet, but they are scattered across 1,000 different 'change addresses'.
Suppose Receiver B now wants to have all the coins in one address for whatever reason, for example to set up a masternode. He has 1,000 coins in his wallet, but only he knows that because the blockchain sees it as 1,000 different change addresses. He therefore MUST send all his coins to a single address without using darksend even when darksend will support mixing of 1,000 coins per transaction.
Am I missing something?
The receiver gets all his Dark in one address. The sender gets their change denominated into new addresses.
Part 2 is correct if we assume B has many addresses full of coin. All the coins would move at the same time. However, your situation is worst case scenario, going from many small change addresses to the largest denomination.