It's "Fleet Range." At the top level, you see the total fuel in your fleet and the distance of all move orders. However, the information that's missing is the overall range the fleet could travel. To find this out, you currently have to expand the ship tree and check the range of each individual ship.

Admittedly, one reason for this might be the ability to transfer fuel within the fleet. But without considering fuel transfer, the current interface requires constant checking of individual ships to get an idea of the fleet's range.

That line is solely for the fuel, therefore limited to the amount of fuel in the fleet. The way I understand it, the tab is for maintenance and logistical purposes, so at a glance, you are able to understand costs for MSP, fuel for the fleet to be operational, and other important information such as location and/or orders.

Having said that, perhaps the range could be implemented in the same way that speed works, including the smallest ship's range in the fleet itself, which I assume currently triggers the 50% (or any other) conditional order?

Perhaps, you can add this as suggestion on the https://aurora2.pentarch.org/index.php?topic=13404.msg169562#new thread as I think we could benefit from something like that.

The Chantry of Light Month 80

Council Chambers, Lathandras, Thedas System

Divine Rosamund XII sat on her throne observing the back and forth of the budget debate.  She blinked and her smart glasses brought up a set of screens.  Templar-Captain Ti'Lir was doing an able job defending his requests even if it had come up that the projected efficiency increase in the Pathfinder Flotillas was going to be less than earlier proposed. Joy, Xi doesn't get boosted by Xr like I had hoped!  Her fingers danced in mid air and the latest census and tax results displayed themselves next to each system the Chantry had settled.  The thought that somehow the Chantry...well not somehow of course.  As the Vinter and Laysian empires had prepared for their last battle, one which could have resulted in the destruction of both, the Chantry had brought them to the peace table.  Then later the Divine Giselle, using the fact the Chantry was responsible for most of both's social services, manoeuvred them both into agreeing that it was in the best interests of them both to abdicate.  Well, Rosamund mused, likely that agreement had been a pretty clever manipulation but the Maker works in ways most mysterious.  Her fingers danced and she could see the break down of population and tax income from the systems in more detail.  Extensive investment in industrial concerns on many of the colony worlds was smoothing out the income discrepancies that earlier reports had shown.  5 of the 11 worlds had incomes near to 300 MCr, a further 5 had incomes around 600 MCr and Niagra was now producing 2000 MCr.  A further 13 systems were colonised but their income and populations were still small.  Of course they all needed protection...which meant the Shield and Wardens...and that meant new construction and...  She sighed and her fingers cleared the displays from her glasses.  That meant more meetings, may the Maker bless them all.  Her attention returned to the council's debate into the start of construction on two deep space construction vessels.

The growth turn has been good for income but the last several turns and the next several turns looks to be:  build new survey ships, refit old survey ships, transport to the max of the CFN (more or less), built some PCFs, and spend money on IUs.  TL4 is now "average" so it isn't coming soon.  But all military ships have been refit and the final construction for the 3 new patrol squadrons is just finishing.  The yards need an expansion that is for sure.

"Show Next Tech" checkbox does not affect the Engine Power dropdown.

On the Create Research Project window, with Engines selected as the type, there are five further dropdowns:

Engine Tech
Engine Power
Fuel Consumption
Thermal Reduction
Engine Size

My current tech is:
Nuclear Pulse
40%-200%
0.8LEPH
50% Thermal
60HS max

When I tick the Show Next Tech checkbox, the dropdown lists repopulate with the options that will become available when I complete the next associated tech.
Except for Engine Power, which still only has the options from 40% to 200%.

Ugh, that's really annoying. We're going to need an admin to fix this, I think - I've messaged Erik, and we'll see if he can clean it up. He seems to be active, at least, which is better than some similar situations I've seen before.

Not a typo strictly speaking but the United States name theme contains "Unavailable" as a last name, which I'm assuming is a mistake.