There is one panel of 5 switches with a "charge" and a "use" switch for
each battery bank and a "Bridge switch" to connect both.
To charge both batteries I make sure both "charge" switches are on as
well as the Bridge switch.

The above is an overly complicated isolater switch isn't it.

There is also a spearate dial type switch where you select whether to
charge off the alternator or 240v charger or neither. I guess the Solar
wire would need to go to this switch? As there are only two positions
on this switch "Alternator" or "Charger" and I wouldn't use the Solar
and Charger at the same time would you just connect the solar wire to
the Charger wire?

Do you think there is any room for simplifying this setup?