I think its is a great idea to have plug in altimeter for use in multiple rockets.
What has been talked about so far though is one altimeter in a rocket right?? This also limits a person to what altimeter he has to buy, and no use of altimeters already owned, for this system anyway.
For true redundancy two altimeters should be used, right? So having the spoken about system so far, allows for only one altimeter to be pluged in.
So far in the three DD rockets I have I've been using 6 pin locking connectors with the AV bays set up to recieve the same sled.(Pic.) It is plug and go. This of course is not redundant, but will be working on that this winter, new sled and a set of altimeters. I haven't had a deployment problem yet, trusting all the links in the chain of deployment. I would feel better though having redundancy in any DD rocket that it is possible to fit in.
With larger planned projects coming up, I definately want redundancy, but will stick to 2 altimeters, differant brands, make the sled standard for all, and plug in locking connectors.
Making connector whips available would not be a bad idea, should you not find
high current board to board connectors. Also even for those not wanting to standardize the sleds to fit all, moving the altimeter from sled to sled with tool less hardware isn't so bad, a short whip/connector right out of the altimeter terminal blocks dosn't have to be fastened to the sled.
I like connectors, it at least eliminates the need for rewiring altimeter to rocket outputs, and prevents drouge/ main screw ups.