If anything the current range of shimano hydro levers are the most streamlined there have been - not much different to the cable levers. Have you actually seen a pair IRL?
A few friends have di2 which are a nice size but I want to stick with mechanical which don’t seem to have come that far from the original ultegra rs685. I haven’t fondled any of the newest range per se but I’d be intrigued to see a size comparison .
If anything the current range of shimano hydro levers are the most streamlined there have been - not much different to the cable levers. Have you actually seen a pair IRL?