The 'hover over target' uses current GS for a ROM estimate. Originally put in for the situation where a receiver needs to divert due to an aircraft emergency (not the AP defined for the segment), to provide pigeons and an ETA at current GS. The map shows all aerodromes with the defined RW length or greater - so if, for example, you select 1830m (6000 ft), it won't show Little-Piddle-on-the-Gusset 600m farm strip.
Checking the AP is not taught in this way - the conventional RB summary tab has all the details, but if you feel you really want to cross-check, you can use it in this way if you wish.
For example, I'm currently testing a trans-USA trail plan. The next RB starts in 6 minutes and the AP is 9 min after that (as I deliberately used the automatically calculated start point, rather than moving the RB to an earlier location). The AP is 120°M/117 from the route; however if the aircraft diverted there right now, it would need to head 171°M for 131 nm and would be there in 18 min at the current 436 knot GS.
Stat Met isn't an irrelevance. The advantage of being able to select the % stat met value is that if, for example, you find that you cannot run a tight trail using 85%, you can try it at a lower value in a few seconds. Thus a trail requiring a minimum tanker fuel value of 60225 kg at 85% can be completely recalculated for 70% in 10 sec - that includes everything such as the fuel graph and RBs - generating a minimum tanker fuel value of 58532 kg.