20 MCU movies in the past ten years, as part of a very deliberately constructed shared universe.
How many Marvel comics in that same timeframe, bound to the same constraints?
Is there a legitimate apples to apples comparison to be made here?
Anything could happen - the DCEU could be a towering cinematic achievment but for a handful of mis-steps at the exec level. Bringing X-Men, F4, etc. could make the MCU really special, or result in a few more flicks that reinforce the notion that the MCU is a mile wide and an inch deep.