Materials which display exotic electronic states are of great interest to fundamental science, such as quantum spin-liquids (QSL) which are theorised to underpin the transition to high-Tc superconductivity. Inelastic neutron scattering has recently revealed fractionalised excitations in the S=1/2 kagome magnet herbertsmithite, a hallmark of a QSL state. Such a highly frustrated state survives in this material despite cationic disorder which perturbs the 2-D magnetic structure. Here we propose to measure a material with remarkably similar properties, ND3+2xCu3-xMo2O8(OD)2, where the kagome lattice is slightly depleted. Bulk magnetisation measurements reveal strong antiferromagnetic interactions (~300K) yet no sign of long-range magnetic order down to T = 2K. Therefore, this material offers the potential to explore QSL states as well as provide an interesting comparison to herbertsmithite.