Nah, those two are terrible for it. Museum is actually good for showing off the main weapon, but since this is a Neo version, its not really about showing off the main weapon, and its the worst map for the special. Ok for the sub I guess.. Walleye is just awful for both the main weapon and the kit. You correctly note the issue with 'zooka on Museum, it just never works well. Its fine for picking off a lone sniper or so but its hard getting much more than that so it's a one hit weapon. I admit I'm not the most adept at utilizing the 'zooka, but this map doesn't provide enough opportunities for it.
The bigger issue is point sensor. These two maps along with Mall don't provide too many "large seas of enemy ink" Most of the time the action is fast and ferocious in both maps by forcing everyone into CQC at mid, and point sensors aren't too helpful in either map since you're generally going to know where everyone is already anyway, and most of them will be visible and shooting all the time. Neither is a map that really lends to camping in wait like Flounder, or Triggerfish, or Skatepark might do where the "flush 'em out" strategy of point sensors is really needed. It's not that they NEVER come in handy in these maps, but the point should be to show off what the weapon can do. Also, in walleye, it's hard to land point sensors reliably. If they snag a crate on the way down they explode in the air and can miss the inkling under them, so you can't really rely on an area being safe in that map just because you threw a disruptor. Piranha was a much better demo earlier today. Lots of open space where enemies are likely to camp out and not too many obstructions for the PS to snag on. That was a much more fun test!
Unfortunately it also highlights how slow it can be to charge the 'zooka on the sloshing machine. It's a pretty good turfing weapon, but compared to the likes of carbon, ttk, aero, octobrush, it charges way too slowly without dedicating some special charge gear to it. I still believe with something like wail this would have been more menacing. I know there's no one who will ever complain about an inkooka on any weapon, but I still feel that given the slow charge time and the fact that the sloshing machine already has a decent ranged option on the main gun, it doesn't add the same advantage it adds on the close range weapons it normally is associated with. Wail would have let it pressure more often. With point sensors and wail or kraken it could have been a sniper/camper hunter rather than making it offensive.
I don't dislike the new kit. Point sensors is one of my favorite subs. But so are splat bombs so it makes it really hard to choose between the two without a standout special. I never quite got along with the vanilla and was hoping the second one would have a little more synergy.
Since I'm not an amazing inkzooka user (I'm good at aiming, I'm a charger main! But WHEN to activate it always trips me up. I try to save it so I know I can get enough targets to justify it, and that seldom happens. I now get happy if I get one splat with it :p It's great when I get 3 by accident.) But those are good tips on its use. Museum really sucks the life out of the inkzooka. Handy for snipers, but you can't pressure the field with it at all!