1. Ejector seats are standard issue with the First Order.1) At the start when Finn wakes up on Jakku, you can very clearly see his seat ejected with a parachute. Since when did the Empire/FO care of about Tie Pilots to the point of giving them parachuted ejection seats? Most TIE's didn't even have shield for the very reason that the pilots were a dime a dozen. Maybe since the defeat things have changed.
2) Mox Van Sydows Character has way way more backstory we are not getting, he Knew Luke, knew of the Solo's, Knew Kylo's identity and obviously fought in some capacity in the war along with the Jedi. I am really curious who he ends up being.
3)When Kylo knocks Rey out in the forest, she is holding the GUN han gave her down at her side, so it is assumed when she is knocked unconscious she drops it, but we later see her with the exact same gun at the end of the movie. Small error there, but nothing big..
2. From StarWars.com: LOR SAN TEKKA
A legendary traveler and explorer, Lor San Tekka is a longtime ally of the New Republic and the Resistance. After the Battle of Endor, San Tekka helped Luke Skywalker recover secret Jedi lore that the Empire had tried to erase, and Leia Organa hopes the old scout can now help find her brother. Following decades of adventure, San Tekka retired to live simply on Jakku, where he follows the dictates of the once-forbidden Church of the Force. But his retirement is fated to be anything but peaceful.
3. It happens...