The Tofoo idea sunds interesting, we have vegan Steaks from "redefine meat". Very pleasant taste for meat eaters.
How about the
Mushroom steak? I'm looking for good vegan proteins to set on the menu one day. Right now we serve cauliflower in two ways, as a steak, puree and Broccolino as decoration. Not my favorite cup of tea, it lacks proteins
One of my favourite dishes is mushrooms. So many things that can be done with them even as a plain "steak". I love them cooked in a mix of olive oil and vegan butter (plain soy yoghurt adds the missing ingredient that most vegan butter misses) cooked slowly over a long low heat until the mushroom almost melts away. Large field mushrooms or even giant puff balls work amazingly well for that. I used to grow my own massive field mushrooms in the UK. Not so easy here in Australia sadly.
Flavored tofu would be pretty easy to make. Homemade is great and pretty easy. It is totally different from normal Chinese/Japanese tofu. I have been having thoughts about ways of making my own equivalent of Tofoo. You'd just need to add the flavouring in with the soy bean curd before the coagulant is added, drained and pressed. It would naturally settle with the soy bean curd and be part of the tofu. Making homemade tofu is exceptionally easy.
You could also investigate Burmese tofu which is made with chickpeas not soy beans. I make my own which is stunningly simple. Literally just boiling chickpea/gram flour with water, mixing to a fine paste and allowing it to set as it cools. Very similar in concept to polenta but with chickpeas you get protein as well. Again I can't see why flavouring can't be added at the making stage (such as liquid smoke or garlic granules, onion powder etc).
Also look up Yuba. In Europe & UK you can buy it ready made. It's soy bean skin but it tastes much better than it sounds! Think of the skin off custard or similar. I have to make my own over here which I've done. It's time consuming, but I used to buy it ready made in the UK and whilst cycling around Europe.
Increasingly, I am finding that vegans in particular, are now staying away from "fake meats" because they are too much like what they stopped eating. I've never really been keen on them, and don't often use them. There are one of two exceptions but not many.
Over here in Australia, there is a massive range of soy meat alternatives available to the catering only market, plus the Chinese, Vietnamese, Korean, Japanese markets have access to so much more as well. Tofu puffs, deep fried tofu and other such things are really available in the normal supermarkets.