Mark, thanks for the fast reply.
Regarding the midi mapping I mixed something up, because I personally find the use of the Norns UI for most functions very pleasant to use.
For me, I wished that mainly pitch, scale by, percentage, but also Launch mode, quantization (2nd page UI Norns) would be mappable as described above since this always takes a bit longer to scroll down, etcā¦
Pitch and percentage play an important role in all my sessions in Timber and it would be cool to get quicker results here. On the other hand an additional, extra page on the Norns UI with pitch, etc. would probably do the job just as good, not sure if that is easier to do, or possible at all though.
Also, if I may wish and dream ;), a LFO for sample start would be extremely useful since I mostly do not use common one shots to trigger with my Polyend Seq., but more random recordings of old film music (appr. 3 sec. - 3 minutes samples) I collected over the years⦠and imagine having here a LFO on sample start 
Regarding the crashes, I will collect a few infos and message them to you, if I understood you correctly. I am sure you read the Norns: crash reports with large sample holding already, It seems to be more a SC related problem, less a app related.