Adding to the above, are you people even using the config options SE has given you? There are more than enough options for grouping, switching and filters in passive/active mode can be freely adjusted as well. You can even cycle through 4 filter presets (when enabled) via L1+OXロ△.

The rest is personal ability to remember which combination you mapped which skill and also coordination ability to know whether you are currently holding L2/R2 or not and keeping in mind what you are currently trying to do.

Personally, I got used to it pretty quickly and can now execute almost any skill without thinking/looking where it is on my crossbar. The system is working fine and is worlds ahead of having huge travelling distances between skills on the regular bars on 1.0