Overcomplicated. What is the exact ''scheme'' about domains? Also, on a spelling level, there will be people who won't be able to spell it correctly.
Some domainers may argue this, but I personally don't feel this name at all, sorry.
A scheme is essentially a plot or plan to do something. A domain scheme, hmm ...
I can't really come up with any plausible idea in domaining that a buyer would be doing relating to this "scheme" thing, to actually call it that ...some plan of action. Offers accepted while you own it. However, not so convinced