I'm now having to get used to cords again as I have bought some Festool tools. Almost all my tools pre-festool were cordless, which replaced my previous corded tools. Of course they also don't have dust collection. I like cordless stuff, but I haven't seen what looks like a solid "we aren't going to change things" mode from Festool when it comes to batteries. I don't have that concern with my M18 tools.
With dust collection, the addition of the cord isn't that big of a deal, you have to deal with the hose as is. But for sure, things would be simpler if cordless. Things do get a bit tangled up if switching around, or say you are switching from tool to vacuuming mode a lot.
One of the big things is when you use a non-plug-it tool. I was using my planer with my CT, which worked great, so much better than holding a shop vac sloppy in the hole and hoping you remembered to turn the vac on. But I was also using my Rotex too on the same task. Switching became a PITA because the planer isn't plug it. I may concerned modifying it. Cordless would have made this easier. But non-festool stuff isn't going to have an auto bluetooth function for the vac, and both tools probably won't run very long as battery tools.
I think I might consider a boom for the CT, which then would again lessen issues of the cord. For now clamp spanning floor joist with hose-cord looped over does the job just as well.
If you are heavy festool tool user, such as a pro, I can see the battery tools making more sense. But since most of them are going to be intermittent usage tools for me (my M18 tools aren't going anyplace), there would be just a couple batteries laying around for long periods of time.
If you intend to own a lot of drills and such from Festool, batteries could make more sense. But right now it would be basically 1 circular saw for me, and on top of that mean I couldn't get a CMS TS module for it.
Far as jig saws, I own corded and cordless versions (non-festool). Both re-enforce my belief that a jigsaw is a tool of last resort. When I do use them, dust is an issue, as they tend to get used in awkward places, tight places and dust just blocks the line or falls down into my eyes. So I'd want dust collection on one.
I want everything to have great dust collection, so the hose will always be there. With a corded tool, it can sit on a shelf for 1-2years (or 20-30 years) and I know it will turn on. With a battery tool, it could be a brick if left on a shelf for a few years.