are you planning on making the multiplayer version? (the perfect towers or pillars or just a random name?) i would really like to challenge some friends... maybe ffa or "tdm"
ooh... just had a tought... multiplayer? maybe if you add the barracks we could have a little battle with other players? the servers could be just locally hosted or if kongregate has a server system of its own you could use that... i would really like to strategize against other people :)
Here's some ideas for the town buildings: Laboratory should open new types of skills beyond the research tree in the game or just replace it totally.
Factory should allow you to add more towers around your main tower maybe? Or it could allow you to make troops to distract/fight the enemy troops.
Hey your ideas are actually pretty nice. I am going to tell you what I had in mind: The factory allows you to produce/convert different kinds of resources even while being offline (so there is an idle factor), the Laboratory is almost exactly what you said: It is going to be used for unlocking all techs and features (for example start at Wave 10,20,30,...). The research is still going to require some time but it is going to continue while playing and being offline. Each building is going to have its own currency so you have to carefully select how you are going to invest your special resources. I wrote the idea of troops and smaller towers down. Maybe I'll add barracks or a construction site. ;)
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Not for the web-version since WebGL already struggles a lot with performance. Maybe if I release a PC or mobile version. :)