I'm sorry but there is no simple way.
I can give you the formulas you need, and I can tell you anything you want to know.
I'll go through the full process of the question you asked here, take my hand and try to follow
When you craft an item
the final resulting ilvl is equal to:
iLvl = floor(cLvl/2) + floor(iLvl/2)
You are clvl 15 and you use gloves with ilvl 14
floor(15/2) + floor(14/2) = 14
Your crafted gloves end up with ilvl 14
This is just a coincidence that it's the same number as the starting ilvl of the gloves used...
If you were, for example, clvl 16 instead, then
floor(16/2) + floor(14/2) = 15
Anyway... let's keep the ilvl 14 crafted blood gloves.
If you found them so early in norm a2, it means that those gloves are Heavy Gloves (not the exceptional or elite version)
It's important to keep in mind that those gloves have a qlvl 7 (quality lvl, a fixed value for each item type)
Why?
Because the available affixes that can roll is based on a relation between ilvl and qlvl, like shown in this formula:
IF (Mlvl > 0)
THEN Alvl = MAX(ilvl;qlvl) + Mlvl
ELSE IF (MAX(ilvl;qlvl)<(99-INT(qlvl/2))
THEN Alvl = (MAX(ilvl;qlvl)-INT(qlvl/2))
ELSE Alvl = (2*MAX(ilvl;qlvl)-99))
If we go through this formula, we find out that an item with qlvl 7 and ilvl 14 results in an alvl (affix lvl) of 11
Now, knowing this, we can look at any website listing all the affixes and their alvl...
At alvl 11, gloves have 11 possible prefixes, and 8 possible suffixes.
The highest clvl req among those 19 affixes is: half freeze duration, which reqs clvl 7 to equip.
It doesn't mean that you'll roll it, but let's just assume that you did roll it just to find out what could be the highest possible resulting clvl to equip your early craft gloves...
Now... how many affixes will you get?
If you were crafting for a final ilvl 71+ item the answer would be easy... fixed to 4 affixes + the mods that come with blood gloves
Crafting number of affixes based on final iLvl:
Ilvls 1-30: 4 affixes (20 %), 3 affixes (20 %), 2 affixes (20 %), 1 affix (40 %)
Ilvls 31-50: 4 affixes (20 %), 3 affixes (20 %), 2 affixes (60 %)
Ilvls 51-70: 4 affixes (20 %), 3 affixes (80 %)
Ilvls 71+: 4 affixes (100 %)
At ilvl 14, you have 20% chance to still roll 4 affixes.
Again, let's assue that you were lucky and got all 4.
Then, we can come back to the formula I gave you in my first post
(Clvl req of highest affix) + 10 + (3 x (number of affixes))
7 + 10 + (3 x 4) = 29
29 is the highest clvl req you could need to equip your crafted gloves, if your were lucky enough (or unlucky enough) to roll 4 affixes AND the highest alvl.
On the other hand, if you rolled only 1 affix, and a low one like +1 light radius, which reqs only clvl 1
Then 1 + 10 + (3 x 1) = 14
Your req range would be clvl 14 to 29 in this example.
D2