Personally I found the camo to be useful. Allowed me to colour code my troops as if they were a bag of skittles ready to be eaten. Only some colours were more dangerous to eat. Also to put some design behind the entire camo section wouldn't be hard(even though coding it might be). If adjacent to the outside of a building/inside one Urban camo gives you a stealth bonus I.E the Aliens have to move in closer to see you. If adjacent to a plant with Jungle Camo the same applies and so on.
I don't know how much reduced vision the Aliens would have per camo as it would have to depend on their current stats(which I haven't seen). But the effects would differ from race to race. The Taman will have only 50% the effect of sight reduction, the Hoverdisks would have none, etc.
Also in 2.5 on very hard, I found the difficulty lacking, due to the fact smoke is Jesus incarnate on the battlefield. Perhaps some hard counters should apply such as the Hover disks and so on. However keeping the happiness up of all the nations is ludicrous, you have to kill 3 alien missions/objects in order to get even a few to pleased(Not enough come around so, even then if they did have enough you would run out of soldiers unless you exploited smoke). And I lost the game mid-way in(sad I couldn't test all the features) when about 4-5 countries weren't pleased, instead content/neutral. How does that make all the nations want to disband X-com!?
However I did have one mission wherein my LZ was invaded by those oversized ticks and had two dead to begin with, then point blank by a Taman another fell. Then another by friendly fire(the bullets shredded through a shazzar and hit him). The last one just got side shot while sitting in an alleyway. Those 3 bastards were lucky to get out alive on that one(Was using smoke the entire mission), and I felt as if I was playing X-com again huddling in my concrete hidey holes as I sent out soldiers to take Alien Plasma fire so I could watch another episode of Farscape. Perhaps more close quarters urban maps are needed as the AI just can't do that on open maps when encountering regular overuse of smoke.
All in all, I enjoyed the 2.5 build with no bugs(aside from the graphical glitch posted in Windows TechS). I enjoyed the aesthetic overhaul greatly, as in 2.4 felt like you were commanding a bunch of bobble-heads taken out of storage(it wasn't that bad, but nevertheless it was a bit goofy). All that needs to be worked on mostly is the AI really, and the writing. I can help with the writing so I'll send some PM's
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