First, thank you for this wonderful mod, can't play this game without mechs anymore.
Unfortunately I found a few bugs:
1. Sera Pha won't give me Valken III after I trade my Valk even after 100 relation with her and armaa
2. I spawn Valken III with console command and play with it a little, It sword animation not work properly it just shoot it sword with floaty arm.
Personally I like old model of Valken III more than this one, Please bring that 1 eye badass model back 
or if possible just make it as pirate's hero mech thank you. 
Update on the Quest to Obtain the Valken III saga: I started a new save, had to do the ArmaA start in Nexerelin due to one of the other mods I have preventing me from doing the MRC start, consoled in the Valkazard and handed it over, talked to the Administrator lady every few days over the course of three ingame months and she never handed the Valken III over to me. So either I am just hilariously unlucky and losing every 50/50, or I think her handing the Valken III over may be bugged, at the very least on my end somehow.
I just tried and got it after 3-4 interactions, so... Not sure what's going on here.
1. Gave valk
2. gave Sera 100 Alpha cores (lol)
3. Talked until the event triggered
Another thing you can try is going into rules.csv and removing RollProbability 0.5 from conditions on line 461
Do you guys get any of the other stuff from her?
I did get the other stuff from her in my last few playthroughs, yeah. Lemme try chucking 100 alpha cores at her and then talk to her a few times. Will edit this post with whatever happens in a few minutes.
UPDATE: Got her to give over the Valken III! I've been throwing a ton of cores at her every time with no luck, but the one thing I did different this time was develop her as a contact and throw her cores after WITHOUT getting Dawn as an officer. Could recruiting Dawn be causing problems somehow?
UPDATE TWO: Okay, I think I can confirm now. I tested it twice and I was able to get the Valken III from her twice both from tossing her a bunch of cores as well as just using devmode to raise her rep by 30, both with and without developing her as a contact. The only difference from all the other times I tried was that I did /not/ recruit Dawn. Then when I tried after recruiting Dawn, she refused to give me the Valken III again.
UPDATE THREE: Alright, my testing is turning out to be not very consistent. She's suddenly not handing the Valken III over again despite those previous methods in updates one and two previously working. Gonna try deleting that line you mentioned and go from there.
UPDATE FOUR; THE UPDATENING: Alright, removed the probability line from rules.csv like you mentioned and it worked perfectly every time, regardless of if I developed her as a contact or not, whether or not I had Dawn as an officer, and whether or not I raised her rep via AI cores or devmode. Hopefully all of this information helps you in the long run, even if it turns out I was literally just hilariously unlucky and nothing else was wrong, and thank you very much for the help!