Sorry Jim, I don't understand. Can you elaborate on why they aren't bugs, please? And what do you mean by features of the device? Do you say that MC can't handle these devices properly?
What I found was the following list of device makers that make use of MTP (from
wikipedia):
* Archos newer devices
* BlackBerry 9500 series
* Canon 400D (XTi) digital SLR
* Creative Technology Zen line — some devices only
* Cowon newer devices, e.g., iAudio (Cowon) D2
* Intel portable media center
* iriver H10 and other newer devices
* JVC media players
* Meizu M series
* Microsoft Zune modified to "MTPZ"
* Motorola mobile phones
* Nikon D40/D40x, D80, D300, D700, D2Xs/D2Hs, D3 and newer Coolpix compact cameras
* Nokia mobile devices
* Palm mobile phones (PocketTunes media player supports MTP file transfers)
* Philips GoGear line
* Samsung Electronics Yepp line and Juke cellular phone/music player
* Sanyo Xacti CG65
* SanDisk Sansa devices
* Sony Ericsson mobile phones
* Some of Sony's MP3-Player, i.e., NWZ-A8xx, NWZ-E436F series
* Certain Sony Cyber-shot DSC camera models
* Latest Sony Drag&Drop Music Players
* Toshiba Gigabeat line
* TrekStor vibez
* Harman Kardon GPS810
Many questions in one post, sorry about that!