Hey
As a player myself, I'll try to reply to the suggestion given to the best of my ability.
1.) I can get behind the idea of the Convoy instantly ending upon the result of the battle. However returning to the previous system would remove a lot of the world traveling and exploring that it brings (Treasure Hunting)
2.) Plunders wouldn't drop to a single per day. As for multiple SS missions for convoy, I can get behind an additional one. The 3 plunders is a way to reward the top players within the server and allow them to feel that they are being rewarded.
3.) It's not a system that favors Convoy runners, Plundering is meant to be rewarding for the top players
However, the massive failure that people fail to realize is that plunders can easily lose out on their rewards.
Regardless of how players think they see it, SS Convoy should always be guarded with a stronger player, that way if a Plunder attacks (which they will), they'll face someone of equal power. And if the plunder loses, they lose a chance and get nothing. The downside is worthwhile for the plus it brings.
and 5.) I disagree, as convoy players would be smart and instantly Teleport to the destination within Konoha.
I respect your opinion
and thank you for your suggestion.