It's hard to think of a more tangible symbol of Scottish nationhood. Edward I was obsessed with the notion of England being the supreme nation in the British Isles, and that there had been a "Bretwalda" (High King) of the country at some unspecified time in the distant past. Trouble was that notion was based on writings by Bede and others who championed the 'superiority' of the English at every opportunity, and not much else. Based on that, the move to secure the Stone of Destiny as part of subsuming Scotland into the kingdom of England was a logical move.
Think this would be high on the list of pointless battles. The only reason Clan Chattan were victorious btw was because the last man standing on the other side had the sense to jump into the River Tay and swim for it! It was actually fought on an island in the river. "28th September 1396 Battle of the North Inch Although the details are subject to much speculation and reinterpretation, this was a planned dual between the Clan Chattan Federation (which comprised clans Mackintosh, Macpherson, MacBean, Davidson, MacGillivrays and Shaws) and Clan Kay, which some historians believe to have been Clan Cameron, traditional enemies of Clan Chattan. For some time, King Robert III had been attempting to persuade the two warring factions to settle their differences amicably and, through the mediation of the 1st Earl of Crawford, it was agreed that a contest would take place. The Chiefs agreed and, in front of a large number of spectators including the King, met on the banks of the River Tay at Perth. Evenly matched, thanks to the last minute recruitment of Henry Smith, a local armourer, a violent conflict took place on the North Inch with Clan Chattan emerging victorious." Scottish Battles Page 5