I recently purchased a trio of Dragons (1C, 1N, 5N) and I've been tinkering to find something that works for me. I just finished up the Basics on all three this weekend, so now it's on to Elites.
I've had a lot of success with this
DRG-1C. 360XL, 4xMPL, 1xSRM6 (2t ammo), and 18 DHS. Right arm is empty, but fully armored (plus quirked for Structure and Armor) to shield. Amazing cooling efficiency means I only need to worry about heat on the really hot maps. It plays like a tanky medium. For modules, I go with Seismic, Derp, and Cooldown for MPL and SRM6.
I just put this
DRG-5N together a couple of days ago. 1x UAC5, 1x SRM4, 2x MG, 2x ML. It is doing pretty well, though it has some noteworthy flaws. It's slower than the 1C and requires much more enemy facing time due to its anemic alpha. It excels as support for the team's assaults and does some pretty amazing work in the latter stages of a match once internals are exposed. For modules, it's Seismic, Derp, UAC5 Cooldown, and either ML Range or SRM4 Cooldown.
The variant I've had the most trouble with is the 1N. The hard point locations are a mess and they don't play together with each other very well.
DRG-1N Version #1 has 2x SRM4, 1x LB10X, and 1x Flamer (alternative 1x MG and 0.5t ammo). The mediocre alpha locks it into the same role as my 5N, but the 5N does it better. For modules, the 1N gets Seismic, Derp, SRM4 Cooldown, and LB10X Cooldown.
-paws