ok lets review
Skills where having say 33 over 25 (or even 32) was a actual improvment
"Kill" skills
Survival but only for the improved healing/food/water/sleep recovery of Items that were food drink
Medical for the same reason'
Dito barter that gave slightly better exchange rate on items as you leveled up
the two skill mini games had hard limits to even start them(you had to be at or over specific levels to even try) and then it was an easily gamed mini game after that that was easyer as you leveled up the skill and passed the minimum for that lock.
but for a lot of skills it was either you were over some minimum skill to auto succeed or you auto failed.
So why are we being so fussy about the fact that you cant add Exactly 3 points to speach skill because you have a skill check coming up in the next encounter and 6 points to Repair because the person who needs 3 speach points also needs you to repair a Mcguffins Brand Vibrating Noise Maker so his Plotpoint Brand Thingamabob will work and he will give you Stuff Brand Thingys (and you can only ask him once because right after that if you cant get the speech check the first time it pops up he dies horibly because his Thingamabob not working will get him killed offscreen
Because Ironicaly thats exactly what your wanting to do