If you want to just drag files into the DAW and don't need sync playback and volume adjust you can use Biab DAW Plug-In Mode. You can run more instances giving more tracks, you can generate Multiriffs for a number of bars or the whole song then just highlight the bars you want and drag them in.
The freeze button in the example GUI can be used when the generate to RAM is added to the plugin, so the plugin will generate the tracks directly to RAM the same as Biab giving quick synced playback and mixing control directly in the plugin.