True enough, though I don't like them much personally.
Now, a non-streak SRM boat would be fun and unique. 
Indeed, I'm adding SSRMs to these on the assumption that they wont be broken as hell later on.
Though as a general rule, I like SRMs on fast stuff, SSRM on slow stuff, and cata is pretty slow so...
Hollander D
why 1 free ton ? srly ?! did it get more armor ?
Hollander E
yeah maybe remove 2 mg's and add a GECM ... so its a bit easyer for new players to do there AA job with this baby ... all "pros" run around with radar of and spot hollander's on 1500m on marsh ^^
On the Holly D, I gave it a GECM on the assumption that 1 free ton of LBX20 ammo lasts a long time.
I had GECM on the Holly E before but decided to change it to BHP so you can see everything you need to with that Lt.gauss and not get snuck up on. If you can see that passive dive bomber coming early, easier to JJ out of the way.
As to the Uzi E, Yeah... not knowing the pod rules for the Uzi was giving me a hard time on this one as was deciding to keep the JJs... its basically Thor Prime's little helper. As for MASC.. eh not enough HS to support it along with that ERPPC and the Uzi is very fast to begin with, in some brawling situations, particularly inside bases, JJs are better.
Also, these two are a bit wonky because I didn't use a mech building program to design them, as the MWLL version of the Holly is pretty butchered weight wise so was just guessing. Assuming a few basic principles and not getting too fancy its not that hard to build MWLL viable builds off CBT rules.
I try not to remove JJs too often but sometimes it is just a must, that Uziel would explode from heat after the second shots if it still had JJs instead of all those DHS. And I stress
DHS.
I'll add some more later.