Message to Apple: keep iOS light

Message to apple: please keep iOS light
Apple, you hear regularly that iOS is stale. But most importantly it's easy, stable and light. Refine it, don't change it. I am amazed by the stability and the battery life on the iPad and the iPhone. Keep it light. Don't add fancy 3D effects that drain an hour of battery life. Don't make it bigger than a giga of storage.
Windows 8 needs 10 gb (and I really like Windows 8). Android 4.1 needs powerful CPU and is not completely smooth yet.
I think it's important to post thoughts of people who think iOS is still superior in many ways. Only people who have tried many OSs can understand how good iOS is.