To set things straight: My question is fair. I'm not criticizing the LMDE's crew's work in any way. So please, nobody gets mad here.
I've switched from the regular Mint to Mint Debian because I had to squeeze out every ounce of performance. By eliminating Ubuntu's intermediary. And I'm a happy LMDE user (apart from an annoying NVidia Twinview problem I hope which will be fixed in UP5).
Now, I have a colleague here who's using Debian (Test) directly. With the same software: Various Samba, Java stuff, Chrome, XFCE desktop and NVidia Twinview. Apparently without hacking his way in whatsoever.
Maybe he's wrong, I don't know. Personally, I expected this no-hacking-Debian thing to be LMDE's added value. So, apart from that, where's the difference ? Multimedia ? Better software compatibility ? Bigger repositories ? ...
Again, no offence intended towards LMDE here.