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Cat whiskers-the user of said enhancement gains +12-35% to any skill that requires rough body dexterity, not fine dexterity, just rough dexterity.

If you're talking percentages, that's skill dexterity, that IS fine dexterity. 'Rough body dexterity' as you seem to describe it would be covered already under bonuses for dodging and parrying, which don't use percentages(and maintaining balance would be separate set of organs anyway, not cat whiskers) such as +1, +2, etc., and those sorts of bonuses are taken care of by existing antennae and extrasensory types.

How about some eating equipment (butter knives, forks & spoons) for feeding the bio-suits?

Uhm, no. As military equipment, the 'suits need to be as self-contained as possible, so carnivorous suits come with the appropriate teeth to chew their own food(anything extra, such as more powerful jaws, is purchased with Bio-E points), herbivore suits have the appropriate molars, lithovores rock-cracking jaws, etc..

You want to gather extra food for your living equipment? You can use your hand weaponry to hunt extra prey, or regular agricultural equipment(like scythes) to cut plants, like hay, for your grazers.
But utensils specifically for hand feeding your 'suit? You done designed the thing wrong then, and you're carrying extra gear-weight you could be using for other more useful stuff.

And bio-engineered eating utensils, which have to be fed in turn, are a waste of gene-work and biomass. Luxuries that the Houses and the Resistance can ill-afford to waste.

I'd be far more interested in bio-mods to the armor that allow it to feed -the pilot-, or at least filter and process extra bio-matter or water to help keep the Splicer alive in the field.