What happens if Kasich is still in the race and Trump still doesn't have the 1237, will he sue?
I'd prefer all candidates run to the end, including the others, who have suspended their candidacy. One of them was my first choice, but was not a candidate, when I got to vote.
I'll vote for Trump, if he is the nominee with a majority of delegate votes at the convention. The problem you have is trying to get someone with a plurality to be your nominee, before the vote of delegates even happens.
I think the GOPe could potentially prepare for a Kasich Write-In Campaign ala Murkowski in Alaska.