Hate on me all you want. Heck ... even call me a DumbAss.
I'm with the OP and kruzman.
Earlier this year I went on a buying spree and ended up with quite a few extremely dirty machines. I pretty much stripped them down to the playfield and removed almost every assembly on each of the games for cleaning.
On re-assembly I put 18-22 AWG 0.187" fully insulated quick (dis)connects on all the coil wires. I removed all the solder on the coil lugs and the female connects (when compressed with needle nose pliers) fit snugly on the coil tabs. I wiggle them in. I use fully insulated because I don't like taking the risk of accidental shorts - particularly on the high voltage circuits.
From what I have seen (and I don't have a lot of experience) the FL coils are the original coil lugs. The FL1 coils are the WPC-95 coil lugs. I had actually never seen quick (dis)connects used on coil wires until I saw it done on Monster Bash and No Good Gofers.
The machines I cleaned were recently available to play at the Northwest Pinball and Arcade Show for 3 days (Friday full day, Saturday full day and Sunday 1/2 day). Not one of them came apart. On the other hand the No Good Gofers slam ramp post screws came apart frequently and needed servicing.
I would also add that a Terminator 2 that I had done like this when I rebuilt the flipper mechanism had a melted coil during the show. It was super easy for the technician to disconnect the coil and prevent any further damage. Fortunately for me I had a spare FL-15411 that I was testing in another machine to simply replace the blown FL-11630 with (literally remove the coil stop, insert the new coil, tighten the coil stop and connect the tabs). It quickly got the machine running for the remainder of the day and I replaced the FL-15411 with the correct FL-11630 that I brought in the next day - yes replacing it again was really easy.
The Addams Family that I had was done like this and here are the weekend statistics.
1 Player Games: 409
2 Player Games: 65
3 Player Games: 2
4 Player Games: 6
Left Flipper: 24551
Right Flipper: 29304