By rig wide I mean that there are presets, but they are for your entire layout. This is good if you have several iPads, but not so great if you only have one ;)
Regarding tempo sync, I KNOW, more than anyone. I personally have a MIDI Looper that I run in my personal pet project, MJDJ, but it needs to get into MIDI Designer.
One issue is that I'm VERY suspicious of MIDI Clock (or even MTC) over Wifi. However, yeah, calculating according to a tempo (with no sync) could happen sooner. I hadn't thought of that.
Let me know if that doesn't answer you, please. Best!
Dan