I started doing some research a week or two ago regarding a respec on my KDF engineer and after asking some friends who were online in-game we all got to a point where we asked each other: what does this skill really do for me? Since no one could answer, I took to the internet and came across the following data that has been collected by some kind and time-wealthy STO players.
Basically, they have used what I suspect are quite a few respecs and decided to find out the real world implications of your skills numbers. Whilst some of you probably already know the general benefits of skills (Flow Capacitors is well know thanks to Plasmonic Leech, for example) this goes to the trouble of showing you on a per-point basis what your skills points do for your build. Popular choices such as Warp Core Potential become less appealing when you really look at the in-game values.
Food for thought, when you decide to do your next respec!