MDS,
1. Miranda is a GUI program, so users expect an usual window to be created.
If you switch to the console in service mode, for 99% of users it will give a blinked black window that disappears quickly.
Not very informative, right?
2. Console in Windows still uses certain code page (full Unicode console is only being tested in Windows 10), all another versions will have problems if your translation won't fit into your console code page. Also, Miranda with russian lang pack uses code page 1251, while console uses code page 866, which makes text unreadable