HD Armor - Good upgrade for lightweight alloys, but not a huge bump
Lightweight Mount - OK, but you won't be fighting anything successfully in a dedicated exploration ship. Good to have for the eventual "I discovered new alien gizmos floating in space... what happens if I shoot it in its stupid face?"
Dirty Drive Tuning - Terrible idea for an explorer. Dramatically increases power consumption (requires larger, heavier powerplant) and adds heat. Clean drive tuning is what you want.
Low Emissions Powerplant - Maybe if you get an awesome roll and don't lose any capacity. But you'll probably take a hit on PP output so you're back to needing a larger, heavier powerplant. I prefer to run an undersize A-rate PP; runs cooler.
Shield Boosters - Again, you're not staying to fight. Shield boosters just add unnecessary mass and suck power. A full set of countermeasures would be more useful since you will be running.
HD armour - always buy this. Not a question, just get it. Who doesn't want free HP?
Lightweight mount - yeah, with you on this. I like the idea of lightweight mounts but typically for me it gets relegated to ships that use performance enhanced thrusters on weapons that don't have anything better to put on.
DD tuning - Also with you here. Though I would point out you mentioned DD tuning is a bad idea partially because of power consumption, and much to my bafflement clean drives has a higher power consumption still. But clean drives is still a speed boost and the heat profile reduction benefits you the 99.99% of the time you aren't fighting in the void.
Aside from escaping combat, speed increase can never be turned down for them moments a planet has higher gravity than you expected, and an emergency boost away is required. Get do.
Low emissions power plant - well...not so much with you on this one as a blanket rule. In the majority of cases, pushing up a power plant class really doesn't harm your mass much. Typically you're turning off a lot you don't need and squashing down to a low plant; a conda build can very happily live on a 4A plant with room to spare. Between clean drives and low emissions you'll probably want to go up a plant side, but on a conda going from 4A to 5A plant loses you about 0.2 LY jump range unmodded. If you're an exploration racer maybe you care about that, but I certainly don't compared to lowering heat profile by a reasonable amount.
Now on smaller ships like the DBE maybe this is an issue. But in many cases going up the power plant class, if it's even necessary, isn't a huge hindrance. Also not a requirement to go to a higher grade mod - if you have a few % spare, nothing wrong with rolling a grade 1 mod until you get a roll that doesn't touch capacity much and gives you at least some heat benefit.
Shield boosters - these are a thing on explorers...?
Engineer Mods:
Sensors. Seeing is important.
Life Support. We need more time to get the reset or AFMU to do repairs.
Point defense that works on other ships. Pesky varmints.
Improved Heat Sinks. With more ammo.
A hotkey for "nearest system" jump. Or, "return to last system" jump.
A "hot" bookmark for nearest repair. See the preset jumps above.
Micro-jumps.
Am I being constructive?
Are these mods that we'd like to see??
Sensors - meh, not a big thing unless you'e dogfighting or trying to keep track of multiple enemies.
Life support - you shouldn't let it get to 0% HP, and if your canopy goes in the void...game over. I guess for the
really long term explorers having more downtime for
during repairs is a thing, but if it adds mass I can see it being forgotten about
Point defense - not really a thing on explorers. Not even much use on combat ships atm...
Heat sinks - Yes. This isn't just an explorer thing, this is an everything thing. Everyone be wanting more heat sinks. We shouldn't need mods to do this, they just need more ammo again full stop. Some mods around cooling speed/length would be nice though, with the right drawbacks.
As for the jumping stuff...I am sure there are many explorers that want ANY way to get back to the last visited system. Micro jumps have been in discussion as a thing, though I really dislike the idea, and as repairs go....out in deep space, there are no repairs.
Finally yes, you are being productive
