My ears were too small for the SE 5-way Reference. As for the rest, no plans yet but they might happen in the future.
I'm not a big fan of the S4i and I'm not familiar with acoustic research. My recommendations for mainstream-sounding smartphone headsets around $100 would be the Velodyne vPulse (big, deep bass but mostly clear and smooth otherwise), Audio Technica ATH-CKM500i (lots of mid-bass and prominent but not overly harsh treble), or Ultimate Ears 500vi (again solid bass and slightly v-shaped overall).
The HD381 has always looked interesting but not something I've had a chance to try yet.
The link you have provided talkes about the New Tears 6, or the NT 6, which is the exact model I reviewed. I have the latest version. The NT 6-Pro is a different model that is said to provide more bass with an extra crossover at the bottom end.
The NT 6 is a great compliment to the 8.A because it's so vastly different. The JH13 is somewhere between, though still closer to the more neutral Hidition than to the warmer 8.A. Both work well for rock but if you're looking for a contrast to the 8.A, go for the NT 6.
The VC02 won't do it - it's got punchy mid-bass but the deep bass is not on-level with the GR99. I would go for the Sony MH1C or maybe Philips SHE3850. The SHE3580 isn't really better than the GR99 overall but it has a small clarity advantage.