So I played a little more with Valkyr, and, she's much better once fully levelled.
Also levelled Rhino Prime, Nekros, Frost and Frost Prime over the past couple of days along with some weapons.
I usually stick to the thrown secondary weapons, primarily Despair, however I levelled Gamacor(?) and I find it helluva fun to use.
Primary wise I levelled Latron Prime, not bad but the reload sucks so need to mod it out, Strun, the shotgun sucks. Also finished off Paris, but it's not as good as Dread imo.
Basically ended up levelling 3 or 4 weapons of each type and some frames.
Next to level is Vauban, Banshee and Volt.
Weapons wise I don't really know what to go for next. I feel that apart from the thrown stuff and Gamacor, so far the secondary weapons are kinda underwhelming. Not found anything else that I like, got Embolist cooking just now so maybe try that out.
Thinking that paring Ember with Ignis, Embolist and Dual Ichor could be fun!
I'm a little disappointed with the current focus lens situation, considering it's such a big deal, having it tied to just one frame seems kinda restrictive, especially when you're encouraged to use all different frames/weapons. Hopefully they change this or at least make the lenses easier to get, or I just need to pull my finger out and get "The War Within" quest completed!