Those aren't bad mechs.
The BJ-3 is probably the most meta-compliant, but it's not like you're bringing Vindy-1X, SDR-5V, and a couple Zeuses. Even 3 Marauders and a Cicada's not terribad.
[Edit to add: If you've got, or are willing to get a BJ-1X, it's still a solid performer in faction play. The Maraders with a BJ-3+BJ-1X would be plenty reasonable evening it comes in light.]
The only big practical problem there is that Marauders aren't known for being nimble or fleet of foot. If the team needs to move fast, the Marauders aren't going to be able to keep up very well for a long dash to a rally point. Light fusion engines will help some with speed when they arrive with the timeline jump this summer.
I differ a little from some in this, but I'd rather have you bring the best meta loadouts on those mechs you've got and start learning good team tactics on the FRR hub while you work on a top-flight, fine-tuned meta deck. But again, probably a good idea to keep an eye on the skill tree and timeline jump for balance shifts.
This is not me selling you on an idea, but I can't help brainstorming a little:
It wouldn't hurt to get a 65- or 70-ton chassis that can run an XL competently, to be able to keep up and bring lots of guns. It's exactly why Grasshoppers and a couple Warhammers are popular. They're unlikely to fall out of favor because of good hardpoint locations and hitboxes. I think they're as safe as anything is going to be carrying over into the new system, but ultimately we'll have to see.
Edited by Virlutris, 17 April 2017 - 11:35 AM.