Because you can shape your removed body however you want, add drafts, fillets, add different heights of the pockets and still the tree doesn't expand downwards, what you're doing is growing the tree straight to the bottom, and that's a mess. Your model will be very hard to read and modify if it expands like that.
Bouta; I'm curious about your suggestion about not using Pockets in CATIA V5. I've never heard of any problems with using Pockets in CATIA V5. Where did you learn this?
1. Avoiding "tall trees" was a V4 practice to improve performance. I've never heard that with V5. Plus putting the Pad and it's sub-features into a Removed body actually makes the tree taller.
2. You can still add all the same sub-features (drafts, fillets, etc.) when using Pockets.
3. Grouping the sub-features in a body does help with reading the tree and modifying the part, but the sub-features could be added immediately after the Pocket to better organize the tree. (the only advantage to grouping features into a body is when making Patterns with the 'current solid' option)
4. Using the V5 tools like Parents/Children and just clicking on the feature makes it easy to modify a part, regardless of where it's located in the tree.
I'm still using Pockets.