What are we talking about here?
Are we talking about Monarch level? Where almost anything you play leads to victory? Or are we talking about Deity?
If it's a Monarch level game it's easier and better to build your civilization up and attack later (if you like, not absolutely necessary). Just have some Jags in order to trigger your golden age the time you want to.
If it's on Deity this strategy will probably fail. And of course, in order to have a chance to even try you have to choose specific settings. If you play random settings, you may start on an island. An island on Deity is an almost certain defeat.
The strange thing is that the same scenario wins on Emperor. I won almost every game I played alone on an island on Emperor.
So what are we talking about here? That it's fun to attack with Jaguar warriors on Monarch or Regent level? What I can answer to that, is that it isn't necessary.
Of course, if you like that style of play, go for it. But I wasn't convinced that there is any virtue in being a bloodthirsty barb. I used the Aztecs (On Emperor) but I play them differently. I take advantage of their cheap barracks, temples and harbors. The juguar warriors, I only use for exploration and to get a GA at the "right" time. I think Aztecs are good and their special unit is ok because it's cheap and early and can be used for exploration but that's all about it. As soon as I get my golden age I start thinking about disbanding my few juaguar warriors. The only reason I may keep them is to appear stronger in the military screen. What? Keep them till the Industrial age to pillage with them? Oh, come on, you can do that better with cavalry.