I believe that the range bonuses in XCOM 2 are kinda too harsh and combined with LW2 graze mechanics it makes killing stuff at close range too unrealiable. Going for a close range flanking shot with a low ranked/low aim soldier is too much of a gamble in comparison to XCOM 1 and I'm not sure that it benefits the gameplay, point-blank failure leaves you exposed so you kinda forced just to take more nades and throwing nades doesn't require a lot of strategic thinking like optimal close-range engagement.
Here is an experimental compromise between X2 and X1. I also think it makes sense for the aim bonus to be more of a quadratic function than linear and difference between something like point-blank and 1 tile away should be lower. Since we have individual properties for every distance in tiles I manually picked the numbers to make it look like a quadratic function.
Blue - LW 1, Red - LW 2 (1.1), Green - Suggested;
![Image](https://s28.postimg.org/qsq7mamvt/yotx_ru.png)
It's mostly a buff to an assault rifle with +10% to hit at point-blank, yet with the addition of graze band the chance to deal base damage remains kinda like in vanilla X2. Keep in mind it's also applied to the enemies.
![Image](https://s28.postimg.org/djgvzxnix/yotx_ru_1.png)
We see that shotguns recieved the biggest accuracy nerf in comparison to XCOM 1. I agree that they were a little OP and your LW1 colonels could easily oblitereate things at medium range with juicy aim bonuses within 10 tiles, but why nerfing the initial point-blank capability? Nothing feels worse than a shotgun right in the face miss.
![Sad :(](./images/smilies/icon_e_sad.gif)
![Image](https://s28.postimg.org/hh45pcac9/yotx_ru_2.png)
Sniper rifle close-range penalties are not a big deal since it's relatively rare to make any difference and if there is an enemy near your sharpshoter who can't be killed with the rest of your squad - you've got better things to do with your sniper than firing primary.
![Image](https://s28.postimg.org/jmygjudsp/yotx_ru_3.png)
A little bit steeper curve than assault rifle, also higher penalty at max range.
![Image](https://s28.postimg.org/6k2u0knkp/yotx_ru_4.png)
A middleground with max bonus close to assault rifle at 5 tiles & higher point-blank penalty.
I tweaked theese values in my .ini and now I'm a happier person, but it worth to suggest cause I feel like it makes LW2 experiense a little bit better. I'll attach the tweaked file if anyone wants to try (replace XComGameData_WeaponData in XComGame\Mods\LW_Owerhaul\Config).