It's pretty simple. It's total political war this time. Neither side can give in. If Obama does, and appoints someone "just like Scalia", (which he'll NEVER do), the court remains the same, with a slight conservative advantage. If Obama appoints another Kagen or Sotomayor, (which he almost for sure WILL DO), it shifts the Supreme Court to a liberal advantage.
The stage is set, and everyone who hasn't been living in a cave for the last 40 years knows and accepts what is on the line this time..... Namely the entire country. Let the name calling and accusations begin. None of it matters. Trump is right yet again. The Republicans have to DELAY, DELAY, DELAY. It really is just that simple.
Then pray to God a Republican gets in this November. If it's Hillary or Sanders, forget the country as you now know it. It will be gone forever.