Hello!
I am wondering if you could add a modpack called The Milan Pack.
https://www.technicpack.net/modpack/the-milan-pack.1437474
It is basically Tekkit Legends but with some nice additions, like Tinkers' construct, Thermal foundation and expansion. It would be a good addition because it is a straight upgrade to the Tekkit Legends modpack.
Also, if you don't add it i understand, it is a small pack.