If you feel you need extra ventilation there's unlikely to be anything any can say to persuade you otherwise. Even if you're wrong (and I'm not saying you are) it's not like extra ventilation is going to harm things. If you were talking about nastily hacking holes in the front with a can opener, I'd try to persuade you otherwise but it looks.like you're trying to do it properly and make a feature of it...so I say go for it!
I like the idea of some sort of logo at the bottom being back-lit. Does make it more complex depending how you're planning to make this. If you're hand cutting and then filling the gap with mesh, probably not possible. But if you're thinking of getting it CNC or laser cut its more possible as long as it can go detailed enough. Might be worth a chat with E22 (Nate or Victoria) to see whether they can help with that - assuming you've not got that sorted already.