I have seen. You could try adding these yourself. You can try see Template:Infobox Upgrade and try out the instructions for those. When copying the infobox's info over to another article, use Source Mode for this.
In fact, just copy the following and paste it on top of the upgrade page, and insert stuff after the equals signs as the values for each parameter:
Phew, done XXXL Trap. That took a while, but I finally done that. Was about to do that myself a long time ago, but I wasn't very ambitious at the time when it came to reaching those prime goals of finishing up infobox upgrades for all tower upgrades.
Boy, am I finding these pages quickly! I don't mean to overwhelm you, just something on your low priority list or something. Ring of fire has almost no BTD6 Info, and is a merged page for BTD4, 5 and a little 6. Rapid Fire is also a litte run-down, I think.
So far, I have not really found much strategy tips for Ring of Fire because I almost never use that upgrade. Most of the time, other upgrades simply do far better. Rapid Fire could be somewhere where I could insert tips about best Ace upgrade stuffs, but it'll be nothing more than "it's useful for X upgrade".