Just finished watching it. I thought it was a little rushed, but I can forgive that since there really wasn't anything building up to the finale aside from the "must stop big bad evil". Even with this, it wasn't bad. I liked the final attack with all the mecha rushing Gajah, but I was hoping for a short battle with all the combinations again. For not doing that, I drop it down a little. Especially since none of them got destroyed. A missed opportunity there.
I was also expecing Gajah to get destroyed instead of sealing himself away. That felt way too much like a Power Rangers ending. Actually, no, since I think all the big bads in PR usually end up destroyed or turned good, so this was actually lower than PR in that regard. However, I can understand why they did it if they're going to do a team up with Gekiranger.
I liked the attack posing without the costumes on. Also the ending with Sakura going into space with Chiefu. That was cute, and I usually don't like cute.
The show ended the way I thought it would more or less. Black is the new head of the team, and the remnants of Dark Shadow are causing mischief. Boukenger was a good series. It had it's ups and downs (namely Zuban), but it had many good elements to watch in most of it's episodes. Good fight choreography, good mecha, likeable characters, great costume designs for the rangers, and an interesting mix of villians. I'll miss it, but now it's time to see what Gekiranger can do. That series looks promising.
Endless Bouken Spirits!