ATC's are paid very good money to separate aircraft.
That's correct and one of the tools we use is workload management. You seem to think that because it's possible it should be accommodated, regardless of the risk. Sorry, that's not the way it works. If I think there's a reasonable chance the extra dozen conflicts and additional complexity you'll create by wandering across my airspace contrary to the general traffic flow will up the workload to potentially unsafe levels then I'd be mad to let you in.
Sure there are options but unless you're there on the day and have the whole picture how can you say which if any were available?