Mode 7 was pushed loads in Mags like Mean Machines especially with import reviews of Pilotwings, Contra 3, Super Castlevania IV, Super Ghost N Ghouls. I agree with samples sadly SEGA looked to go the FM route with the MD and had a limited of one sample channel.
If more Mega-CD games had used the ASIC chip I think it would have been view in a more favourable manner. If in 1992 AfterBuner 3 had been showing off amazing rotation and scaling, it could have been very different along with ports of Outrun, Space Harrier and AB II all showing off what wasn't possible on Mode 7.
The thing about FMV was the Mega CD wasn't really geared up for it and any CD system could more or less handle FMV games.