One thing I may do still is to add a swing out tray that is under the table. I would be nice to have my pen drills in a custom tray that just swings on a pivot point under the table. A magnetic catch would keep it in place easily. Idealy, if this was made from 2 layers and the pivot point towards the outside middle it could almost be a hidden tray that could swing 180 degrees with the proper hinge and set agains the side of the table when open. [
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I mentioned earlier I think that a great thing is to be able to make a "drill table sled" If you glued a fence block to the top of a 3 foot long piece of baltic birch, you could nicely attach a wide top to this t-track design. My other jig I plan to make is for end drilling. This photo is of a table, Mine will be a jig that attaches the the t-track on my table and hangs off the left side of my top. I might try to hinge it with a screw down arm to lock it in place. This would be mainly for storage, but could allow for angles too.
PS, not my photo and I do not remember where I got it from.
BTW, you say that you would alter a few things. Just curious, what would you do diffrent?