Just some thoughts.
Do you build a game engine or a render engine ? A game engine should support more game related features (eg. physics libs, entity system, AI sub systems, scripting system, network system, editors/tools ).
The name and notation of AexolGL remindes me of OpenGL. My first thought was, that it was some hardware related GPU API like Mantel.
What are you general expectations?
The honest truth is:
You need to surpass the free engines and will most likely be in direct competition with UDK4,crytek and unity if you want to take money. I would expect at least a single reference game if it costs money or lot of demos if it is free.
What can I do better?
The engine market is ruled by really large player (frostbite,udk4,unity,crytek), most offering some inexpensive license, resulting in really tough competition.
Look at your competition, most likely you will be in direct competition with unity/udk4. Where is your product better then theirs ? Why should I use your product over theirs ? Why should I invest time and money to evaluate your product ?
Answer this questions yourself and you will know where you need to get better.
You don't need necessarily better rendering capacity or faster game AI or better physics behavior, but eventually you need something, a niche, where you beat your competition.
