I think I did, where there any errors in the TSLPatcher? The only three causes of it not working is either "geno_hold.uti" isn't in the override, the Duros' utc file didn't get placed into the 202tel.mod or it's the save game you used.
The Telos Surface Assassin's I believe are made up by modders just for the sake of restoring those lines. I will actually keep those alien lines for those lines because those alien lines are cut and restoring them in this mod would be a good idea though I can offer you a voice over role for a more important character if you like (It isn't Dessicus)
Dessicus will be able to use more than just normal attack though I'm not sure if it would be master ranked due to balancing reasons. In my mod, the GenoHaradan Members will be using more than just a single type of weapon and if they do use weapons they will most likely be GenoHaradan items. As for Dessicus' weapons, I believe those are actually Disruptor's not Ion Pistols, I'd also like to note, the GenoHaradan Blaster from K1 being introduced into TSL will be stronger than the Survival Pistol. If anything the Survival Pistol would be the lowest of the low for the GenoHaradan so their leader wouldn't use it though I guarantee in my mod the weapons he wields will make sense.
It will be in the Jekk Jekk Tarr - and all I'm going to say about it is that it works and doesn't conflict with the plot. Dessicus does have a unique look which is a reskin of a player head which is available on Deadlystream and the Steam Workshop which the people have requested I used, I do have permission to use this skin so when I get it working in game as a separate head I will likely show it off. The GenoHaradan Assassins will have unique weapons and will be different in appearance. I do not think I will use Drexl or any beast in my mod, instead, I have something much cooler in mind. I'll probably give them power blast and power attack just to avoid overpowering them. While they may not replace the HK-50's they may show up in groups of three in kinda "hidden" area's such as the Shyrack Caves on Korriban though they will probably despawn once you complete Nar Shadda. And yes, GenoHaradan gear will be obtainable as well as some other potential items.
As for the items. The Double Blade is very likely, Disruptor pistols are a likely, all K1 GenoHaradan items are returning, I wouldn't say Blaster Rifles because I like to use textures that aren't seen in-game (Mostly K1 item textures hidden in TSL files) and I think all the Blaster Rifle textures are seen in-game, I already have a heavy armor made up for Dessicus though I need to figure out what the medium one should be like, I've already previewed the texture and the stats of a GenoHaradan mask before (It uses the same texture the Duros' uses)
Probably won't be a terrorist act though there will definitely be a reason to stop the GenoHaradan. If by lack of private messaging I bet it's because my PM box is full, I can make a space for your PM's if anyone likes.
I'd like to mention the Sion VS Nihilus scene is staying in Extended Enclave and will not be added to Legacy so the assumed death won't be as big as it would have been otherwise. Though, sadly I must admit even without that scene I feel like Sion may have a bigger role in Legacy than what Obsidian intended for him in Nar Shadda. Though it hopefully will focus on Dessicus, the GenoHaradan and the Force at the same time.