According to my (obviously very big) experience with converting games from D64 to CRT format using D2EF tool, I can tell you most compatible games for these conversions are games from SSI.
Seems that SSI programmers have crystal ball that Easyflash cartridges will be made 20-25 years after they make their games
Many of them are very big RPG and strategy games.
Few of them are even too big for Easyflash 1MB slot.
If someone can give me a hint how to convert these big games (more than 2D) to M2I format, we will have them here in CRT format
Don't be optimistic to have them all here - for smaller SSI disc-games results were fifty-fifty they work using D2EF tool.
Bigger games most likely have bigger compatibility issues when using D2EF tool.