Sole reason for that skill is to use 'Close the Pocket'. Costing fuel instead of muni is very tricky part, but it seems they made it that way so player can use CtP more easily I guess?
Debatable really. Its more of an oversight imo, rather then something intentional. Because when it comes to CtP even if Breakthought would have been 80 muni, in a global picture it means nothing when it comes to such expensive abilities. After all ppl are fine using recon+dive bomb.
Making it to raid tactic & works only with inf nearby could results in bad if you think about the reason behind using that skill. You now will require inf + tank to capture enemy strategy territory.
Actually it will requare only tank, for 40 muni and the speed tanks are de-capture and capture territory its insane really. I'm not saying tanks shouldnt do that, but they are by no means should do it that fast. Tightrope did a video I belive showing it and tanks with Raidtactics are able to cap\de-cap almost instantly.
And being only 40 muni, its very spammable ability. With such cost tanks should at very least not being able to cap points only de-cap them. And ideally tank cap\de-cap speed should not be equal to LVs one.