I am a returning player (I've played most of my time about 3-4 years ago) so I still have to experiment with the new traps a bit. I also don't know about most of the current designs probably, so if any of these already exist, let me know.
Also on a side note it took me around 13 tries to get the security captcha correct while registering for this forum.
This base actually is actually even more effective (depends on the way you see it) when you are upgrading your Bloodhound.
The Seeker Bird will still interact with it (in this Layout the Seeker Bird has to be spun in the correct angle, otherwise it will be pushed by the Bloodhound and you cannot escape it) and not seeing the Bloodhound coming to push to the Seeker Bird makes for a nice surprise.