Personally, I am all for making ammo more scarce. That was actually something already included from New Vision 1.2. For example, instead of finding a brick of 16 bullets of 10mm ammo, all bricks were set to have only 8 rounds. Same with shotgun shells, .223...all of them were cut in half at least. I only mention this because i just don't know what it is that Mack's mod changed to make it any different (is ammo even rarer than this?)
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I just read through the readme file for that mod. There are some interesting ideas there. I don't agree with making things like keycards, holodisks, condoms, and pocket lint worth a lot of money, though. But I see that he made ammo really expensive.
I think I might have to play his mod and see if there is anything I want to incorporate. I'll definitely have to check out the new item descriptions. If you see something really noteworthy as you play it, let me know, and I'll look into it.