A bit confusing post b/c not clear if you mean the cargo ship event running now or the smuggler event with characters - you mention fleet above? The cargo event is just cake imo. I can beat the 2nd to last level with just Boba and the Phoenix ships - all 3 of which are very solid and use good characters to pilot - so while I wouldn't focus you should eventually be able to handle it and get extra falcon shards and ability mats.
The smuggler event is definitely not a focus - but as last post said you almost stumble into having a capable squad by farming vets for JRey and if you have NewChew/Raid Han your only missing piece is Qira - who herself is solid. I find those rewards very useful for mod slicing and usually help me get another mod to level 6 once the event runs. Qira was a very quick cantina farm if you buy refreshes with crystals and allows you to run a capable smuggler/scoundrel squad in TW defense if you wanted.
I'd say let the other pieces build naturally over time and when you get the vets close finish up Qira. Don't drop other farms to get smugglers for these events.