Not that I know of...later on, if you still need help with endurance while in forms, make sure to split slotting between end mod and redux - that might be best.
If you ever get IO sets and have some +recovery lying around from bonuses and some end redux in the form powers, slotting the forms themselves for end mod or redux isn't that important. (More important on Dwarf than Nova, IMO). I've got a single Fly/End Redux IO in Nova, but that's on my 'shade, where end problems are cured by Stygian. Dwarf still has some Res and End Redux, if I remember right.
According to Combat Attributes, both nova and dwarf consume .26 end/sec but also provide that much in additional end recovery. So does it make more sense to slot them for endmod or endrdx? I just did some calculation and it looks like if I slot lvl 35 (highest I can slot currently) endrdx it'll save me .7 end/sec, but if i slot endmod it'll provide an additional .9 end/sec, so I guess endmod is the way to go. Anything I'm missing?