I understand why some people wouldn't like the gameplay process of having to crawl around since it's slower, but I personally love it. The sound design for these sections are incredible and realistic-enough. I feel adding these sections with a bit of "danger" would make these sections more anxiety inducing. Such as having to crawl around and hide from scientists, or something akin to it. I personally don't mind the idea of not being able to move as fast on the ground, since it makes perfect sense to have to do this since if the tanks were all connected together (in a lab environment), it wouldn't make sense at all. The again, I have patience and love the terror that this game has potential for! Keep up the fantastic work and I look forward to seeing more. The artwork and design is breathtaking, be proud of yourselves!
Being slower is not a problem. The problem is that controlling it is such a hassle and not fun at all. In the end, it's a game, it have to be fun. Unless it's a rage game where a game is deliberately designed for streaming enjoyment.
Also, due to the POV, I got vertigo/motion sickness after playing for just 15 minutes. Other games that also make me sick are SOMA (PC) and Conduit (Wii).