my new integra 7

Congrats mate.

It was a while back but I remember installing all the Axial stuff into user-preset slots. Almost completely filled it.

I never saw anything new appear after that.

One thing to understand about the integra-7 is that at its core it contains a list of built-in basic waveforms (some of these are located in the "expansion" packs). All patches you can select or download are made by combining these built-in basic waveforms in various ways (by applying filters, layering, modulations and effects). Downloading "new" sounds is really downloading new recipes to combine the already built-in waveforms into a patch. In other words there is no way to add a fundamentally new accordion/bandoneon waveform, only ways to tweak the built-in ones to sound different. While integra-7 has enough built-in waveforms and transformation options to keep one busy for a life-time, it's not possible to add something "fundamentally new" (at least not without upgrading the firmware), only to tweak the built-in waveforms in new ways. Having said that, I don't know of anyone that spent time tweaking accordeon/bandoneon sounds but maybe, in the near future, that person could be you :D

Good heads-up for the newb bro'.