With update 13, pepole will be seeing more of the rakshasa, and they'll say, "hey those things are so cool!" So, I suggest plans be made to introduce them with update 14.
They could have +2s to DEX and Cha, being cats and in PnP very influencial, and if a -2 is needed, perhaps in WIS.
They'd be P2P of course, or earnable via favor.
Dragonborn is also something players would like to see hit DDO, having been brought about in 4E PnP. Dragonborn have never beed introduced in DDO before, but this would be good a time as any.
+2s in Wisdom, they have dragonic heritage so they would be wise, and perhaps STR too. -2 in INT or DEX.
main feature of this race would be a dragon`s breath ability. This power would hit enemies they face with fire, cold, acid, or electricity,(depending on feat or skin colour) but not disrupt stuff llike weapon swinging. This would make it something pepole would actually use and be benifical for DPSs. Either certin number per rests, or recharge, like Paladin Smite evil.
Every few levels would grant a feat to spend on breath weapons to enlarge, increase damage, etc. Also, AP could be spent on enhancments.