I like having trade fleets seperated - I usually group them in units of 10 - maybe 20 at the end game.
In the early and mid game they are 'free scouts' in areas like the med, Baltic and British Isles you can effectively see nearly all the provinces continuously with a bunch of single/small trade ships running around. You can see RR modifiers, and all sorts of other things that don't show on the ledger. By late game this isn't as useful since the # of countries has been whittled down to the point that you can probably know what they are doing anyway.
In colonial areas they form a cloud constantly patrolling to knock down pirates before everything gets settled up.
And of course as noted by others you can get a lot of them back home in case of a war. Light ships are valuable for blockading freeing up heavies to fight and/or escort transports.
The idea that 'small countries should be forced to take their chances' is BS. 6 light ships may not be much for France or Great Britian but can mean the difference between bankruptcy and building improvements if you are playing as a Dutch minor. Loosing those ships in a stack wipe might mean decades of rebuilding but if they are seperated some of them will escape.
In the early and mid game they are 'free scouts' in areas like the med, Baltic and British Isles you can effectively see nearly all the provinces continuously with a bunch of single/small trade ships running around. You can see RR modifiers, and all sorts of other things that don't show on the ledger. By late game this isn't as useful since the # of countries has been whittled down to the point that you can probably know what they are doing anyway.
In colonial areas they form a cloud constantly patrolling to knock down pirates before everything gets settled up.
And of course as noted by others you can get a lot of them back home in case of a war. Light ships are valuable for blockading freeing up heavies to fight and/or escort transports.
The idea that 'small countries should be forced to take their chances' is BS. 6 light ships may not be much for France or Great Britian but can mean the difference between bankruptcy and building improvements if you are playing as a Dutch minor. Loosing those ships in a stack wipe might mean decades of rebuilding but if they are seperated some of them will escape.