The model we're launching with is based on analysis of sales and customer data for the past couple of years. Please be aware that if you've not done any such analysis and you're still throwing out ideas, they may well actually be the kind of idea that likely ruins the company. It's also easy to like other people's ideas if they mean you pay less, but it's still not such a great idea if we end up firing people to try to stay afloat because the model significantly reduces our revenue. One of the risks of the "pay once" model that Construct 2 has always faced is that we could have tens of thousands of active users, and still go out of business, because the support for long-term existing users is entirely funded by new user sales, which there's a chance could end up tailing off. So if you are interested in the long-term viability of Construct and our ability to expand Construct to new areas to make it better and more powerful (of which hiring new staff and paying their salaries is a significant part), some kind of subscription or on-going payment is actually good way to do that.
On the one hand we have users baying for major new features ranging across broad areas like animation, 3D, teamwork/collaboration, modularity, even scripting or new styles of drag-and-drop system; on the other we have people who want everything cheaper, lower-cost, less investment. You should also remember you can't have it all: if the product is cheaper or less sustainable, you can assume many of those ideas will be postponed far off in to the distant future, rather than something we could conceivably approach at some point, or even actively start planning.