Passing options to grid features

I'm trying to create a custom grid feature, that shows an empty row (placeholder row) to directly add new records to the store. I have this working, but I want to be able to pass options to this grid feature. Normally you add the feature on the grid as follows:

Code:

Ext.create('Ext.grid.Panel', {
    title: 'Simpsons',
    store: Ext.data.StoreManager.lookup('simpsonsStore'),
    columns: [
        { text: 'Name',  dataIndex: 'name' },
        { text: 'Email', dataIndex: 'email', flex: 1 },
        { text: 'Phone', dataIndex: 'phone' }
    ],
    features = [{
        option1: false,
        placeholderDefaults: {
            amount: 10
        },
        ftype: 'placeholderrow'
    }],
    height: 200,
    width: 400,
    renderTo: Ext.getBody()
});

However, the options (option1 and placeholderDefaults) are not available within the feature. And it looks like that other feature do get their parameters this way. Maybe it is because I use Sencha Architect? Because I add the feature via the 'Process config' option. And then settings the config:

Code:

config.features = [{
    option1: false,
    placeholderDefaults: {
        amount: 10
    },
    ftype: 'placeholderrow'
}];


return config;

Has anybody a clue how to fix this?

Code snippet of the feature...

Code:

Ext.define('Ext.grid.feature.PlaceholderRow', {
    alias: 'feature.placeholderrow',

    init: function(grid) {
        var me = this,
            store = grid.getStore(),
            view = me.view;
/* option1 and placeholderDefaults are not available here! */    
        view.on({
            beforerefresh: function(view) {
                // Code to add a placeholder row into the store,,,
        });
    }
});