Here's how is see TIE agreements, and I see I'm not the only one.
Team names are not important here. But I'm in charge of team X, a decent team. My next game is against team Y, a better team all around that probably underestimates me. Now, I've managed to build up some enthusiasm, and I think I might have a shot to beat team Y if I play normal, and he does the expected thing, and TIE. No reason why he shouldn't, I'm a weaker team, he doesn't know that I have some enthusiasm saved up for this game, and probably suspects I'm about to TIE myself, since chances of winning are slim. But, to make sure, Y sends me a bb-mail and proposes a TIE agreement. Now, I'm screwed.
I have 4 options:
1. Agree to the TIE proposition, and lose;
2. Say no, at which point, Y will not play TIE against me, since he knows I'm up to something. Again, I lose;
3. Not respond to the bb-mail, and now you can take a look above, at nr. 2, because again, my opponent knows I'm up to something. The outcome is...I lose;
4. Agree to TIE, play normal, beat team Y, and then be called a weasel(and I don't see why I shouldn't, since I've deceived a fellow player).
What's the upside for me here? What option do I choose? Either way, I end up a loser. Even if I win by choosing option 4, I did it using a lie, and I don't like that.
Anyway, usually the teams that propose TIE agreements are the teams that already have an advantage over the opponent, and want to gather up some enthusiasm for the future.
The only instance when I would accept a TIE agreement is the first game of the season, be it either for the NT or club team. Because, again, the team that proposes the TIE is the one that has the advantage, and it's reasonable not to expect much when my GS is 7 all around and enthusiasm is sitting at 5.
Well, this is just my personal opinion and I respect other opinions that don't agree with this one.