Yes for me.
Play them. History of most leavers has been pretty good for Wasps. Obviously there will be those like Daly, who did not impress in his last months, but many have headed towards retirement or other clubs playing well and giving their all for the shirt. Don't confuse an abject performance from the team as a whole with a lack of desire from bunch of guys who are leaving. We played badly, but it us too easy to blame a lack of effort on the part of leavers; several players who will be here next year had bad games last week too.
Pick the team on merit, not on who will be here next year. That for me would be Cruse over Taylor, but not because one is leaving.