According to your five points the disciples are,
Solution 1: Disciples getting gag order from Jesus
Solution 2: Disciples being ignorant or kept in ignorance.
Solution 3: Disciples being too dumb to notice extraordinary events
Solution 4: Damage control on witnessed failure & objectionable conduct/saying:
http://historical-jesus.info/28.html
Yes these solutions are the answers to the problem that "Mark" had to face:
How to deal with the mundane eyewitness(es) testimonies which were against (or deficient about) Christian tenets, more so about Jesus on earth being Divine and with extraordinary powers or privileges.
Solution 1: Disciples getting gag order from Jesus:
a) NOT saying Jairus' daughter was resurrected (5:43)
b) NOT claiming Jesus was Christ (8:30)
c) NOT telling about the events on the high mountain, which included transfiguration, God saying Jesus is his Son and Moses & Elijah alive in bodily forms (9:9-10)
Solution 2: Disciples being ignorant or kept in ignorance:
a) NOT aware of the (Christian) meaning of Jesus' future passion (8:33)
b) NOT understanding what "rising from the dead" meant (right after seeing Moses & Elijah!) (9:10)
c) NOT asking about the meaning of (among other things) Jesus' future rising (9:32b)
d) NOT told about the Empty Tomb (16:8)
Solution 3: Disciples being too dumb to notice extraordinary events:
a) NOT "seeing" the miraculous feeding(s) (6:52, 8:4, 17-21)
b) NOT considering "walking on the sea" or/and the following stoppage of the wind as divine miracle(s) (6:52)
Solution 4: Damage control on witnessed failure & objectionable conduct/saying:
a) Jairus' daughter not resurrected (damage control: 5:42).
b) Rejection of Jesus in his hometown and his failure to heal people there (damage control: 6:4, 5b).
c) Near-impossibility for wealthy to enter the Kingdom of God (damage control: 10:27).
d) Disturbance in the temple (damage control: 11:17).
e) Peter saying Jesus cursed at a fig tree which withered later (damage control: 11:22-25).
f) Disciples falling away after Jesus' arrest (damage control: 14:27b).
Cordially, Bernard