We are still limited to 16 returns in Logic correct? Unless AU V3 has finally changed that.
So, at most 16 returns. I haven't tried a multi-timbral template in years.
The 2 issues are somewhat related, because if some instances failed to connect, it would be much less of a pain if I was only dealing with maybe 30 instances total instead of 450.
The big issue for me with the multi-timbral plugin in logic is that you can't mix on the same track that your midi goes on. You have to add all of your mix plugins to the AUX returns and do any automation of those plugins by adding the AUX to your logic arragement, doubling your track count if you add each AUX return. I understand that this is a more natural in other DAWs, but in Logic it isn't a very natural feeling workflow (for me anyway).