I know you know this verse...but in regards to Jonah I think it affirms the Open view. Jonah was mad because he knew that if they were to repent, then God would not destroy them as He said that He would do.
God said that He was going to do something...but if the circumstances changed...then God would change what He said He was going to do.
God wasn't exactly in the habit of sending prophets to wicked Gentiles. Do you think Jonah/3 days in the fish's belly and the repentance of Nineveh was a type of something?
John 12
16: These things understood not his disciples at the first: but when Jesus was glorified, then remembered they that these things were written of him, and that they had done these things unto him.
17: The people therefore that was with him when he called Lazarus out of his grave, and raised him from the dead, bare record.
18: For this cause the people also met him, for that they heard that he had done this miracle.
19: The Pharisees therefore said among themselves, Perceive ye how ye prevail nothing? behold, the world is gone after him.
20: And there were
certain Greeks among them that came up to worship at the feast:
21: The same came therefore to Philip, which was of Bethsaida of Galilee, and desired him,
saying, Sir, we would see Jesus.
22: Philip cometh and telleth Andrew: and again Andrew and Philip tell Jesus.
23: And Jesus answered them, saying, The hour is come, that the Son of man should be glorified.
24:
Verily, verily, I say unto you, Except a corn of wheat fall into the ground and die, it abideth alone: but if it die, it bringeth forth much fruit.
25: He that loveth his life shall lose it; and he that hateth his life in this world shall keep it unto life eternal.
26: If any man serve me, let him follow me; and where I am, there shall also my servant be: if any man serve me, him will my Father honour.
27: Now is my soul troubled; and what shall I say? Father, save me from this hour: but for this cause came I unto this hour.
28: Father, glorify thy name. Then came there a voice from heaven, saying, I have both glorified it, and will glorify it again.
29: The people therefore, that stood by, and heard it, said that it thundered: others said, An angel spake to him.
30: Jesus answered and said, This voice came not because of me, but for your sakes.
31: Now is the judgment of this world: now shall the prince of this world be cast out.
32: And I,
if I be lifted up from the earth, will draw all men unto me.
33: This he said, signifying what death he should die.
Matthew 12
38: Then certain of the scribes and of the Pharisees answered, saying, Master, we would see a sign from thee.
39: But he answered and said unto them, An evil and adulterous generation seeketh after a sign;
and there shall no sign be given to it, but the sign of the prophet Jonas:
40: For as Jonas was three days and three nights in the whale's belly; so shall the Son of man be three days and three nights in the heart of the earth.
41:
The men of Nineveh shall rise in judgment with this generation, and shall condemn it: because they repented at the preaching of Jonas; and,
behold, a greater than Jonas is here.
I think there's much more going on in the story of Jonah/Nineveh than God "changing his mind".
Much that God did in the Old Testament was for our learning and
for an example for us.
Romans 15
4: For whatsoever things were written aforetime were written
for our learning, that we through patience and comfort of the scriptures might have hope.
1 Corinthians 10
10: Neither murmur ye, as some of them also murmured, and were destroyed of the destroyer.
11:
Now all these things happened unto them for ensamples: and they are written for our admonition, upon whom the ends of the world are come.