A new N scale Layout

Well I've been thinking a lot about what I want to do with my own little model railroad. While my current BendTrak modules are nice, they are big, flat, the track work is on the poorer side and they loud while running (gluing the track down was NOT a good idea). I've been toying with the idea to build a 4 foot straight module that would go between my current modules, but after evaluating the track work I just can't justify that. The track work is bad in some places and needs major repair (more like rebuilding). So I am left with the option to rebuild the two existing balloon modules or to work on something completely new.

At this point in time I do not have any local hobby groups building modules, and the one person I knew who was building modules has moved away and was using a different standard than me anyway. After seeing some of the great non module displays that folks are making in the class I’m taking, and in Model Railroader magazine I’m leaning toward a small (3x5 foot/ 91x152 cm) semi permanent layout. Now the question is do I model part of the NEC to justify having the GG1 when it comes out, do I model a part of the PRR main line or do I do a Pennsy themed freelanced layout?

I think I’ll make up some sample track plans in XTrkCad and see what works.