matrixIds always prefixed by matrixSet in WMTS layer

In plugins/layer_types/openlayers_layer_type_wmts.js, the WMTS layer automatically provides a matrixId array which is filled with 26 matrixIDs consisting of the current options.matrixSet and an integer (the zoom level).

var matrixIds = new Array(26);
for (var i=0; i<26; ++i) {
  matrixIds[i] = options.matrixSet + ":" + i;
}

I don't think this behaviour is correct. It only applies to GeoServer WMTS services, which expect the matrixId to be prefixed by the matrixSet and a colon. The default behaviour of OpenLayers is to set the matrixId to the current zoom level (http://dev.openlayers.org/docs/files/OpenLayers/Layer/WMTS-js.html#OpenL...). It only uses other matrixIds if they are provided explicitely. Wouldn't it be better if this behaviour was implemented in openlayers_layer_type_wmts.js as well? The current setting makes it impossible to use WMTS servers that expect the standard behaviour of OpenLayers. I think there should be an additional field 'matrix-Ids' for the layer type WMTS in which the user can set the matrix Ids by himself as a comma separated list. An additional checkbox "Prefix with matrixSet" could be provided which implements the current behaviour.