DF,
Like choosing a mortgage picking an airline is a compromise.
For some EZY is a better proposition than BA for others it isn’t.
You have to think long term. For some nights in their own bed is important for others nightstopping on LH destinations is attractive. Then again some favour nights in other people’s beds.
Think long term, the hassle to swap airlines can be great. What you want today could be v different to what you want in your mid 50s.
The evidence would suggest, in the main with notable exceptions, that pilots gravitate to LH and only return to SH for a command and then go back to LH at the earliest opportunity. When considering EZY over BA whatever lifestyle suits you now or even what you think will suit you in the future may change.
The comparison of seniority numbers for commands on various fleets in BA is telling as to what the majority of people consider the best place to be is.
In BA 85% is fine ( well perhaps good)
10% is irritating/frustrating/bad
5% of it is a nightmare.