Andy -You need to know what you want to do - as it standsYou can have 3 trains -
#1 in the single siding on the right hand side, #2 in the run-round loop, and#3 running round the circuit. Of course, you can't do anything with the one in the siding , unless you are running DCC. That's going to get "old" very quickly!......
So, what are you interested in? Do you want to do switching - you'll need some more customers sidings and, if possible, a small yard to sort out the cars for switching. You could put a passenger station alongside that run round - but if you put a Passenger train in one side, you can't run round your freight cars, and if the Freight is out on the main, where do you put the Passenger train? Do you need to add a loco service facility? Icing platforms? Freight house? Stockyard? Port? What era? - steam or diesel? 40' cars? 50' cars? modern 86' cars? What sort of locos?
I think you need to have a good think about where your interests lie, what you want to do, and then start thinking about the trackplan and how much space you have to fit it in to. 11 x 6 sounds great - BUT - is it going to have it's long edge against a wall? if so you are going to have to reach across 4 feet or so to reach the train that just derailed on that rear track!
Sorry to sound negative, but until you can answer those questions, the question of what to put in it scenery-wise is a no-brainer.
Shortliner(Jack) away up here in the Highlands