What the hell you're talking about? Vet5 units are bad? Fals even at Vet 0 kill infantry for breakfast, at Vet 5 they rape any unit they want. Obers with lmg upgrade will kill everything provided they are used at correct range at Vet5 they're unstoppable killing even broken (arm) Commandos.
To summarise you want powerful Vet5 bonuses to come as quick as Vet3? Yeah, that's a great idea.
Let me explain for you that OKW gets 2 additional Vet levels so of course it takes longer to reach level 5 then level 3 and that's completely normal! There is nothing wrong with that.
I fell this topic was born due to sheer envy over UKF Infantry Section. Well you can have all these changes if you'll make OKW early game as shitty as UKF is.
I think you misunderstand. Vet 5 units are not bad, they are just extremely difficult to get. Once you have them sure, they are strong, stronger than allied vet 3 elite inf. What I meant was that allied infantry was better (and for that matter Wehrmacht Grenadiers), because they scale much better as they don't take ages to level up. Basically they are more economical.
I didn't say as quickly as Vet 3, only quicker than it is now because it takes ages. I have gotten vet 5 obers only once or twice. This is for the reason that, as stated, it takes ages, and also because they are insanely difficult to keep alive. Same thing applies to Falls. As I said earlier, it my Falls have 50 kills and are not vet 5 yet, then something is wrong. Its just ridiculous.
OKW late game infantry isn't really comparably to tommies. They are completely different units. But as it stands, they are not very strong. That is why you see so much leIG spam and volks spam, because OKW elite infantry simply are not anywhere near as effective, and that is why I think the vet change would be a step in the right direction.