Check the mod priority guide:
https://docs.google.com/spreadsheets/d/1ty239kyJbBs1sLhTo1JvSWuN0mIJsK1nwVdI6OLLtXo/view?rm=minimalOh Lee, my darling Lee, my beloved Lee. Lee-Enfield is my personal favourite doll, I cannot describe how happy I was when her upgrade was revealed, and am very pleased to say it’s a great one at that. Given Lee was already a great base to build from, there was very little chance of this upgrade being bad. It’s pretty generic though, and for the most part she’s just a better version of her original self with some new bells and whistles.
In terms of damage dealing, an non-upgraded Lee still remains a good and safe choice, though one now overshadowed by many of the newer RFs. Lee MOD does aim to improve her raw capabilities quite a bit, with her boosted Damage and Rate of Fire stats, her special AP ammo from MOD3, and the boosts from Skill 2. However, the new main thing going for her is her brand new support capabilities.
First, Lee’s Skill 1 was improved to now give a Damage boost to any doll on her tiles upon activation. Her new Skill 2,
Proof of Glory, aims to take it even further. This is a skill similar to Webley where the effect changes depending on whether Lee is leader or not. Whenever she receives a buff, she will either buff the entire team’s Damage if she’s the echelon leader, or buff her own Rate of Fire if she isn’t. The maximum amount of stacks depend on the amount of allies on her tiles, so make sure her tiles are occupied whenever possible. Skill 2 is up to either a teamwide 26% Damage buff or a 52% Self Rate of Fire buff. Both are very effective, though in general you’d prefer to opt for the teamwide Damage, as it affects both DPS.
So overall, you get an improvement on an already effective base, with additional support capabilities that let her fill a new niche. Lee MOD is a very nice package, and a worthwhile upgrade overall. Her lack of a true defining speciality does hold her back a little bit, just enough to keep her from being a true High priority, but still one I can heartily recommend in general.
MOD2 is where she will reach the peak of her new support niche, though MOD3 also brings with it a very nice Special Equipment albeit at a high cost. Even MOD1 is nice on a budget, just making her a better version of her original self.