But the fact that 5 different states have access to southern border seems thoughful.

-true but what significance of this when your southern India acts like a big boss not as good neighbor? they want us as failed state all the time, doesn't matter who is ruling india at time. so now after this nakabandi which is 3rd is an affirmation, i really don't see the point.

Map out states vertically so that southern and northern borders are accessible to each and every state.
-- true but federalism was not necessary at all and nobody asked for it except madhesis, i would give 75 district with directly elected council and it's limited members to run , this would solve a lot of problem like ethnicity, language, locality and akhanda territory etc.
if they had to - declare 5 development area by mahendra as states at least nobody could say they're partial but their egoistic ball hindered on the way, common sense was thrown out as go to hell the whole country. questions arises if madeshi have their own why not tharus?  why madeshis have special marriage citizenship right that affects whole country when they represent only 25-30%? and ugliest part is they are not still satisfied until we become like, talk like - indians - that's what looks like so far. and their regional leaders are all indian agents.

give tharus power/help/support, if they are forced to join hidden indian agenda that would be the biggest mistake in history and say bye bye to your akhanda sudur  ass whatever the hangover u r on currently , will be poof in future. don't be stingy on ethnic group who showed loyalty to remain  in nepal time again and again than conditional and aggressive madhesis  with  no strong affiliation (mere 2047 clause hence forth) ,   that's all i'm saying.