1. Umbrel is just a nice web interface, is not a node software.
2. After v 0.5.x they fucked badly all the "internal affairs" of that bundle. Was a promising bundle, but is not anymore...
3. Being a huge bundle will always have issues with apps and also those apps will not be updated
4. Any personalization change you will want to do will depend a lot of how is constructed the bundle.
5. umbrel is more for noobs with a Pi that just want to discover and learn stuff about running a node. If you want a serious node, DIY.

You have been warned.