Jenner is my favorite chassis, and I own all four variants. The F is easily the first variant I'd sell; pure lasers are monotonous and the JR7-F is just stupid hot in comparison to the Firestarter H or S. 3 MPL + 3 SL can be fun with the reduced beam duration over 6 MLs, but it's still no Firestarter.
I find the JR7-D to have the most brawling potential out of the standard variants, and I personally consider it to be the most fun mech in the game. Twin SRM-4s will be way more useful than SSRM-2s, so I'd only recommend running streaks if you have fun with them; you should be avoiding fights against most other lights anyways. For lasers I'll usually go with either 4 SPL for DPS or 2 SL + 2 ML for heat efficiency, though 4 ML is also good.
The JR7-K is the only standard variant with meaningful quirks. 4 MPLs is the most common way to build one, but thanks to that -10% energy heat generation, it's pretty much automatically better than the other variants at doing any build that doesn't have 2 missiles or 6 lasers.
General build advice:
- I recommend dropping to 1 JJ unless you're specifically building to be capable of jumping really well. You won't be able to jump very high, but you'll still be able to do the important stuff like jump turns. Taking a bunch of JJs will usually come at the cost of having terrible sustained DPS, but it's still fun occasionally.
- You're one of the only lights that is easier to kill via CT than by legs. Your front CT armor should always be maxed, preferably with very low rear CT armor. I personally run 2 points on the rear, most pilots I see use 5 or so.
- I'd advise against AMS on lights. Your speed should already be
way more than enough to make LRMs useless, and a streakcrow will buttonmash your face off with or without AMS. That 1.5 tons is extremely valuable on a light, using it to improve your armor, speed, jump distance, or heat efficiency will improve your chances vs
any opponent.
Some of my favorite builds, just to give you some ideas. I'll let you do your own fine tuning:
JR7-D -My usual build
JR7-D - jumpy fun version
JR7-F - Metamechs.com build
JR7-F - hit and run fun version
JR7-K - Metamechs.com
JR7-K - "too many guns" fun version